Gaining a Long-Haul Competitive Advantage in the Railway Industry

The overreaching goal has been to bolster competitiveness and attract innovative contributions to railway sustainability and efficiency from new incumbents and firms operating in diverse transport markets.

Different countries have chosen different paths, leading to varying results. And for the many successes, there have been failures too. In this article, we evaluate the lessons learned from railway market liberalisation and highlight why a robust and proactive supply chain strategy draws the line between those who retain a competitive advantage and those firms who get derailed after tender victory.

Market Liberalisation – Leading by Example

Eliminating the exclusive rights of existing operators for commercial long-distance railways has been a core objective of the EU’s railway liberalisation movement and was first introduced with the fourth railway package back in 2016.

The first railway package, introduced in 2001, was a significant evolution in rail market liberalisation, making public tendering a standard process.  Railway companies, for the first time, were given the chance to enter this market under a free competition model that respects the principles of transparency and non-discrimination. This opened up opportunities in the European railway market for any European rail operator, public or private, from any country. Encouraging competition between incumbents and new players in the railway market to create greater capacity and inspire new technology innovation and services for travellers.

Today, France’s passenger rail market, dominated by SNCF, is heralded as achieving the most significant transformation by railway liberalisation and created many opportunities for new incumbents to win contracts formerly reserved for national operators. For example, Italian rail operator Trenitalia has operated Frecciarossa trains on the Paris–Lyon line since autumn 2021, and Spanish rail operator Renfe has served the Paris–Marseille corridor since 2024. France has seen a significant increase in the number of private rail operators, offering a range of services from high-speed trains to regional commuter services. And companies such as Ouigo, a subsidiary of SNCF have disrupted the traditional rail market by offering low-cost, high-quality services that appeal to a wider range of passengers.

However, for the many tender successes, there have been failures too. The open-access rail co-operative Railcoop had been hoping to rejuvenate the Bordeaux to Lyon route but failed to ever launch the passenger service and went into liquidation. While it is not clear what exactly went wrong, what we can be sure of is that Railcoop was unable to match its intentions outlined in the tender application. A compelling entry-level strategy was not backed up by a robust supply chain management infrastructure and a sustainable operating model.

The opportunity for private companies to contribute to the development of the country’s railway infrastructure is a highly lucrative one for companies of all sizes and specialties. Only if they get it right for the long haul. Entering a highly competitive new market presents uncertainties and risks, and strict compliance procedures need to be adhered to. On top of this, an aggressive price strategy coupled with a low carbon footprint should always be a top priority for any tender application.

At Milexia, we recommend a strategic four-stage process to gain and maintain a footing in a competitive railway liberalisation market. With grave consideration, that the successes of stages one and two will become irrelevant if they cannot be backed up and reinforced by stages three and four.

Stage One: The Qualification Phase

The tendering of rail services subject to Public Service Orders (PSOs) is a long and complex process and sets limited timescales for bids meaning bidders have limited time to prepare their offers.

The perimeter of the tender must be properly defined and qualified from the outset. New entries should identify the robustness of their value proposition against the perimeters of the tender, including operating costs, maintenance costs, and rolling stock availability.

Ensuring that rolling stock is available to enter the market in the timeframe set by the tender requires an agile business model to be in place to adapt to changing market conditions and demands. Any tender application must demonstrate a commitment to safety, quality, decarbonisation, and sustainability, showcasing relevant certifications and innovative practices. And must be backed with hard evidence.

Stage Two: Project Tenders Offer

For driving the contract forward ideally, new entrants into the railway market should consider assigning or outsourcing a skilled bid team – experts in rail engineering with strong technical skills, project management, and financial expertise. And who can advise on how best to utilise existing in-house solutions and optimal procurement needs and standards in line with a roadmap for new product development.

Stage Three: Supply Chain Management

From stock availability, quantities according to their needs, and adapting the multiple small sites available to serve the infrastructure.  The winning organisations are those that can develop a forward-thinking approach for every part of the supply chain, from rolling stock procurement and demand planning to parts delivery and maintenance. And show agility for production delivery in line with defined timelines and with stock approved by the relevant authorities.

Stage Four: Ongoing Installation and Maintenance

Effective planning, coordination, and execution are essential for ensuring the timely completion of projects while maintaining high standards of quality and safety. And must be backed by a solid financial foundation for market agility. We recommend having access to financial capital for at least four years – and having a dynamic outfit that can ramp up and adapt to fluctuating market dynamics.

It is about being meticulous with the coordination of the lifetime of a project and building strategies aligned to KPIs. From planning and scheduling site installations, implementing safety protocols and regulations for compliance to managing resources, and organising logistics.

For a typical rail operator project, this should include:

  1. Implementation and monitoring of the renovation operation.
  2. Proper identification of the components necessary for each application and meeting the operator’s technical requirements.
  3. Complete traceability of the source, origin, and quality of the components supplied.
  4. First-class productivity and industrial performance through the implementation of a structured process.
  5. The delivery of ready-to-use named-out kits made available for the trains undergoing maintenance, in line with the schedule requested by the operator.
  6. Economic performance indicators and reporting for the operator.

Conclusion: Staying On Track with Railway Liberalisation

There is a huge opportunity for new incumbents to make their mark and profit from the railway liberalisation movement, but winning the tender means nothing without a robust supply chain infrastructure in place. Navigating opportunities from EU rail liberalisation must be guided by specialised expertise for the definition, realisation, monitoring, and maintenance of any project. Only then can new incumbents bring and sustain an active contribution to the sustainability and effectiveness of our railways.

By Laure El Mhadder, Sales Director Electronics at Milexia France and Alain Gorrec – Integration Advisor at Milexia France

Source: Supply Chain Strategy Magazine, August 2024

Gaining a Long-Haul Competitive Advantage in the Railway Industry

The overreaching goal has been to bolster competitiveness and attract innovative contributions to railway sustainability and efficiency from new incumbents and firms operating in diverse transport markets.

Different countries have chosen different paths, leading to varying results. And for the many successes, there have been failures too. In this article, we evaluate the lessons learned from railway market liberalisation and highlight why a robust and proactive supply chain strategy draws the line between those who retain a competitive advantage and those firms who get derailed after tender victory.

Market Liberalisation – Leading by Example

Eliminating the exclusive rights of existing operators for commercial long-distance railways has been a core objective of the EU’s railway liberalisation movement and was first introduced with the fourth railway package back in 2016.

The first railway package, introduced in 2001, was a significant evolution in rail market liberalisation, making public tendering a standard process.  Railway companies, for the first time, were given the chance to enter this market under a free competition model that respects the principles of transparency and non-discrimination. This opened up opportunities in the European railway market for any European rail operator, public or private, from any country. Encouraging competition between incumbents and new players in the railway market to create greater capacity and inspire new technology innovation and services for travellers.

Today, France’s passenger rail market, dominated by SNCF, is heralded as achieving the most significant transformation by railway liberalisation and created many opportunities for new incumbents to win contracts formerly reserved for national operators. For example, Italian rail operator Trenitalia has operated Frecciarossa trains on the Paris–Lyon line since autumn 2021, and Spanish rail operator Renfe has served the Paris–Marseille corridor since 2024. France has seen a significant increase in the number of private rail operators, offering a range of services from high-speed trains to regional commuter services. And companies such as Ouigo, a subsidiary of SNCF have disrupted the traditional rail market by offering low-cost, high-quality services that appeal to a wider range of passengers.

However, for the many tender successes, there have been failures too. The open-access rail co-operative Railcoop had been hoping to rejuvenate the Bordeaux to Lyon route but failed to ever launch the passenger service and went into liquidation. While it is not clear what exactly went wrong, what we can be sure of is that Railcoop was unable to match its intentions outlined in the tender application. A compelling entry-level strategy was not backed up by a robust supply chain management infrastructure and a sustainable operating model.

The opportunity for private companies to contribute to the development of the country’s railway infrastructure is a highly lucrative one for companies of all sizes and specialties. Only if they get it right for the long haul. Entering a highly competitive new market presents uncertainties and risks, and strict compliance procedures need to be adhered to. On top of this, an aggressive price strategy coupled with a low carbon footprint should always be a top priority for any tender application.

At Milexia, we recommend a strategic four-stage process to gain and maintain a footing in a competitive railway liberalisation market. With grave consideration, that the successes of stages one and two will become irrelevant if they cannot be backed up and reinforced by stages three and four.

Stage One: The Qualification Phase

The tendering of rail services subject to Public Service Orders (PSOs) is a long and complex process and sets limited timescales for bids meaning bidders have limited time to prepare their offers.

The perimeter of the tender must be properly defined and qualified from the outset. New entries should identify the robustness of their value proposition against the perimeters of the tender, including operating costs, maintenance costs, and rolling stock availability.

Ensuring that rolling stock is available to enter the market in the timeframe set by the tender requires an agile business model to be in place to adapt to changing market conditions and demands. Any tender application must demonstrate a commitment to safety, quality, decarbonisation, and sustainability, showcasing relevant certifications and innovative practices. And must be backed with hard evidence.

Stage Two: Project Tenders Offer

For driving the contract forward ideally, new entrants into the railway market should consider assigning or outsourcing a skilled bid team – experts in rail engineering with strong technical skills, project management, and financial expertise. And who can advise on how best to utilise existing in-house solutions and optimal procurement needs and standards in line with a roadmap for new product development.

Stage Three: Supply Chain Management

From stock availability, quantities according to their needs, and adapting the multiple small sites available to serve the infrastructure.  The winning organisations are those that can develop a forward-thinking approach for every part of the supply chain, from rolling stock procurement and demand planning to parts delivery and maintenance. And show agility for production delivery in line with defined timelines and with stock approved by the relevant authorities.

Stage Four: Ongoing Installation and Maintenance

Effective planning, coordination, and execution are essential for ensuring the timely completion of projects while maintaining high standards of quality and safety. And must be backed by a solid financial foundation for market agility. We recommend having access to financial capital for at least four years – and having a dynamic outfit that can ramp up and adapt to fluctuating market dynamics.

It is about being meticulous with the coordination of the lifetime of a project and building strategies aligned to KPIs. From planning and scheduling site installations, implementing safety protocols and regulations for compliance to managing resources, and organising logistics.

For a typical rail operator project, this should include:

  1. Implementation and monitoring of the renovation operation.
  2. Proper identification of the components necessary for each application and meeting the operator’s technical requirements.
  3. Complete traceability of the source, origin, and quality of the components supplied.
  4. First-class productivity and industrial performance through the implementation of a structured process.
  5. The delivery of ready-to-use named-out kits made available for the trains undergoing maintenance, in line with the schedule requested by the operator.
  6. Economic performance indicators and reporting for the operator.

Conclusion: Staying On Track with Railway Liberalisation

There is a huge opportunity for new incumbents to make their mark and profit from the railway liberalisation movement, but winning the tender means nothing without a robust supply chain infrastructure in place. Navigating opportunities from EU rail liberalisation must be guided by specialised expertise for the definition, realisation, monitoring, and maintenance of any project. Only then can new incumbents bring and sustain an active contribution to the sustainability and effectiveness of our railways.

By Laure El Mhadder, Sales Director Electronics at Milexia France and Alain Gorrec – Integration Advisor at Milexia France

Source: Supply Chain Strategy Magazine, August 2024

Milexia Group signs a distributor agreement with PALS Electronics

Milexia Group strengthens its offering by reinforcing its Satcoms Product Portfolio. This will increase our customers’ choice of Antenna Systems in the Defense and Broadcast Markets.

Milexia is pleased to announce its expansion through signing a Distributor Agreement with Antenna manufacturer PALS Electronics. PALS Electronics, established in Istanbul since 1995 are a manufacturer of satellite and broadcast products and turnkey systems solutions for broadcasting, satellite, military and governmental institutions.

Complimenting current Milexia’s range of satellite communications antennas, the products from PALs Electronics completes our MIL-STD-188-164 compliant portfolio of products.

“Partnering with Milexia Group marks a significant step in our mission to deliver the most advanced satellite communication solutions to our stakeholders. Together, we will offer a comprehensive portfolio that meets the highest military standards, ensuring our customers can access the most extensive and flexible systems available, says Bertug Socu, Executive Director, PALS.”

“We are very proud to add the PALS product range to our existing, complementary portfolio,” says Xavier Gaillard, CEO Milexia Group. “This partnership will enhance our solutions and reinforce our services offering in military and commercial Satcom market, globally.”

About Milexia:

Founded in 1971, the Milexia Group is one of the world’s leading European suppliers for high-quality electronic components, systems and scientific instruments technology. It has offices and warehouses in France, Italy, Spain, the United Kingdom and Germany. The group has technical centres in France and the United Kingdom, which offer customised, installation, training and maintenance solutions for the defense, space, transportation, Satcom, Scientific Instrumentation, and others civil industries.

Your Innovative Technology Partner | Milexia Group

About PAL Electronics:

PALS Electronics, established in Istanbul since 1995, is a manufacturer of satellite and broadcast products and turnkey systems solutions for broadcasting, satellite, military and governmental institutions. Today they are also supplying their products via their facility in the Netherlands.

https://pals.com.tr/

Press contacts:

UK –  Paulina MICHALSKA ;  paulina.michalska@milexia.com

France – Léo ROBIN ; leo.robin@milexia.com

France –  Carla DOYEMET ;Carla.doyemet@milexia.com

Italy – Silvia PASSAFARO ; silvia.passafaro@milexia.com

Spain – Gianfranco ABANTO ; gianfranco.abanto@milexia.com

Germany – Saskia WAGNER ; saskia.wagner@milexia.com

Milexia Group signs a distributor agreement with PALS Electronics

Milexia Group strengthens its offering by reinforcing its Satcoms Product Portfolio. This will increase our customers’ choice of Antenna Systems in the Defense and Broadcast Markets.

Milexia is pleased to announce its expansion through signing a Distributor Agreement with Antenna manufacturer PALS Electronics. PALS Electronics, established in Istanbul since 1995 are a manufacturer of satellite and broadcast products and turnkey systems solutions for broadcasting, satellite, military and governmental institutions.

Complimenting current Milexia’s range of satellite communications antennas, the products from PALs Electronics completes our MIL-STD-188-164 compliant portfolio of products.

“Partnering with Milexia Group marks a significant step in our mission to deliver the most advanced satellite communication solutions to our stakeholders. Together, we will offer a comprehensive portfolio that meets the highest military standards, ensuring our customers can access the most extensive and flexible systems available, says Bertug Socu, Executive Director, PALS.”

“We are very proud to add the PALS product range to our existing, complementary portfolio,” says Xavier Gaillard, CEO Milexia Group. “This partnership will enhance our solutions and reinforce our services offering in military and commercial Satcom market, globally.”

About Milexia:

Founded in 1971, the Milexia Group is one of the world’s leading European suppliers for high-quality electronic components, systems and scientific instruments technology. It has offices and warehouses in France, Italy, Spain, the United Kingdom and Germany. The group has technical centres in France and the United Kingdom, which offer customised, installation, training and maintenance solutions for the defense, space, transportation, Satcom, Scientific Instrumentation, and others civil industries.

Your Innovative Technology Partner | Milexia Group

About PAL Electronics:

PALS Electronics, established in Istanbul since 1995, is a manufacturer of satellite and broadcast products and turnkey systems solutions for broadcasting, satellite, military and governmental institutions. Today they are also supplying their products via their facility in the Netherlands.

https://pals.com.tr/

Press contacts:

UK –  Paulina MICHALSKA ;  paulina.michalska@milexia.com

France – Léo ROBIN ; leo.robin@milexia.com

France –  Carla DOYEMET ;Carla.doyemet@milexia.com

Italy – Silvia PASSAFARO ; silvia.passafaro@milexia.com

Spain – Gianfranco ABANTO ; gianfranco.abanto@milexia.com

Germany – Saskia WAGNER ; saskia.wagner@milexia.com

Milexia Group signs a distributor agreement with PALS Electronics

Milexia Group strengthens its offering by reinforcing its Satcoms Product Portfolio. This will increase our customers’ choice of Antenna Systems in the Defense and Broadcast Markets.

Milexia is pleased to announce its expansion through signing a Distributor Agreement with Antenna manufacturer PALS Electronics. PALS Electronics, established in Istanbul since 1995 are a manufacturer of satellite and broadcast products and turnkey systems solutions for broadcasting, satellite, military and governmental institutions.

Complimenting current Milexia’s range of satellite communications antennas, the products from PALs Electronics completes our MIL-STD-188-164 compliant portfolio of products.

“Partnering with Milexia Group marks a significant step in our mission to deliver the most advanced satellite communication solutions to our stakeholders. Together, we will offer a comprehensive portfolio that meets the highest military standards, ensuring our customers can access the most extensive and flexible systems available, says Bertug Socu, Executive Director, PALS.”

“We are very proud to add the PALS product range to our existing, complementary portfolio,” says Xavier Gaillard, CEO Milexia Group. “This partnership will enhance our solutions and reinforce our services offering in military and commercial Satcom market, globally.”

About Milexia:

Founded in 1971, the Milexia Group is one of the world’s leading European suppliers for high-quality electronic components, systems and scientific instruments technology. It has offices and warehouses in France, Italy, Spain, the United Kingdom and Germany. The group has technical centres in France and the United Kingdom, which offer customised, installation, training and maintenance solutions for the defense, space, transportation, Satcom, Scientific Instrumentation, and others civil industries.

Your Innovative Technology Partner | Milexia Group

About PAL Electronics:

PALS Electronics, established in Istanbul since 1995, is a manufacturer of satellite and broadcast products and turnkey systems solutions for broadcasting, satellite, military and governmental institutions. Today they are also supplying their products via their facility in the Netherlands.

https://pals.com.tr/

Press contacts:

UK –  Paulina MICHALSKA ;  paulina.michalska@milexia.com

France – Léo ROBIN ; leo.robin@milexia.com

France –  Carla DOYEMET ;Carla.doyemet@milexia.com

Italy – Silvia PASSAFARO ; silvia.passafaro@milexia.com

Spain – Gianfranco ABANTO ; gianfranco.abanto@milexia.com

Germany – Saskia WAGNER ; saskia.wagner@milexia.com

Milexia Group signs a distributor agreement with PALS Electronics

Milexia Group strengthens its offering by reinforcing its Satcoms Product Portfolio. This will increase our customers’ choice of Antenna Systems in the Defense and Broadcast Markets.

Milexia is pleased to announce its expansion through signing a Distributor Agreement with Antenna manufacturer PALS Electronics. PALS Electronics, established in Istanbul since 1995 are a manufacturer of satellite and broadcast products and turnkey systems solutions for broadcasting, satellite, military and governmental institutions.

Complimenting current Milexia’s range of satellite communications antennas, the products from PALs Electronics completes our MIL-STD-188-164 compliant portfolio of products.

“Partnering with Milexia Group marks a significant step in our mission to deliver the most advanced satellite communication solutions to our stakeholders. Together, we will offer a comprehensive portfolio that meets the highest military standards, ensuring our customers can access the most extensive and flexible systems available, says Bertug Socu, Executive Director, PALS.”

“We are very proud to add the PALS product range to our existing, complementary portfolio,” says Xavier Gaillard, CEO Milexia Group. “This partnership will enhance our solutions and reinforce our services offering in military and commercial Satcom market, globally.”

About Milexia:

Founded in 1971, the Milexia Group is one of the world’s leading European suppliers for high-quality electronic components, systems and scientific instruments technology. It has offices and warehouses in France, Italy, Spain, the United Kingdom and Germany. The group has technical centres in France and the United Kingdom, which offer customised, installation, training and maintenance solutions for the defense, space, transportation, Satcom, Scientific Instrumentation, and others civil industries.

Your Innovative Technology Partner | Milexia Group

About PAL Electronics:

PALS Electronics, established in Istanbul since 1995, is a manufacturer of satellite and broadcast products and turnkey systems solutions for broadcasting, satellite, military and governmental institutions. Today they are also supplying their products via their facility in the Netherlands.

https://pals.com.tr/

Press contacts:

UK –  Paulina MICHALSKA ;  paulina.michalska@milexia.com

France – Léo ROBIN ; leo.robin@milexia.com

France –  Carla DOYEMET ;Carla.doyemet@milexia.com

Italy – Silvia PASSAFARO ; silvia.passafaro@milexia.com

Spain – Gianfranco ABANTO ; gianfranco.abanto@milexia.com

Germany – Saskia WAGNER ; saskia.wagner@milexia.com

Milexia Group signs a distributor agreement with PALS Electronics

Milexia Group strengthens its offering by reinforcing its Satcoms Product Portfolio. This will increase our customers’ choice of Antenna Systems in the Defense and Broadcast Markets.

Milexia is pleased to announce its expansion through signing a Distributor Agreement with Antenna manufacturer PALS Electronics. PALS Electronics, established in Istanbul since 1995 are a manufacturer of satellite and broadcast products and turnkey systems solutions for broadcasting, satellite, military and governmental institutions.

Complimenting current Milexia’s range of satellite communications antennas, the products from PALs Electronics completes our MIL-STD-188-164 compliant portfolio of products.

“Partnering with Milexia Group marks a significant step in our mission to deliver the most advanced satellite communication solutions to our stakeholders. Together, we will offer a comprehensive portfolio that meets the highest military standards, ensuring our customers can access the most extensive and flexible systems available, says Bertug Socu, Executive Director, PALS.”

“We are very proud to add the PALS product range to our existing, complementary portfolio,” says Xavier Gaillard, CEO Milexia Group. “This partnership will enhance our solutions and reinforce our services offering in military and commercial Satcom market, globally.”

About Milexia:

Founded in 1971, the Milexia Group is one of the world’s leading European suppliers for high-quality electronic components, systems and scientific instruments technology. It has offices and warehouses in France, Italy, Spain, the United Kingdom and Germany. The group has technical centres in France and the United Kingdom, which offer customised, installation, training and maintenance solutions for the defense, space, transportation, Satcom, Scientific Instrumentation, and others civil industries.

Your Innovative Technology Partner | Milexia Group

About PAL Electronics:

PALS Electronics, established in Istanbul since 1995, is a manufacturer of satellite and broadcast products and turnkey systems solutions for broadcasting, satellite, military and governmental institutions. Today they are also supplying their products via their facility in the Netherlands.

https://pals.com.tr/

Press contacts:

UK –  Paulina MICHALSKA ;  paulina.michalska@milexia.com

France – Léo ROBIN ; leo.robin@milexia.com

France –  Carla DOYEMET ;Carla.doyemet@milexia.com

Italy – Silvia PASSAFARO ; silvia.passafaro@milexia.com

Spain – Gianfranco ABANTO ; gianfranco.abanto@milexia.com

Germany – Saskia WAGNER ; saskia.wagner@milexia.com

The Rise of Ka-Band Solid State Power Amplifiers (SSPAs) in Teleport Technology

For years, Ka-Band solid state power amplifiers (SSPAs) were rarely used for high data rate transmission. Unable to offer the kind of reliability or cost-effectiveness that broadcasters needed, professionals passed over them in favour of Travelling Wave Tube Amplifiers (TWTAs) for most applications. 

In 2024, the poles have reversed. Modern Ka-Band SSPA capabilities are almost unrecognisable compared to their counterparts of previous decades. Sector titans like SpaceX (Starlink), Amazon (Project Kuiper) and Telesat (Project Light Speed) have all made Ka-Band a central pillar of their global internet coverage and satellite communication operations, and more of this capability is down to SSPA technology. 

What’s changed? Put simply – weather mitigation and technology. Traditionally the Achilles heel of Ka-Band transmission, sensitivity to rain and other atmospheric conditions were a vulnerability of the frequency. With a number of technological developments now at hand, this weakness has largely disappeared.  

Resistance to rain fade was the saving grace of  the C and Ku-Band frequency. Now with new modulation schemes and improvements in the whole RF chain, the strengths of Ka-Band systems come shining through. 

Ka-Band Solid State Power Amplifiers (SSPA) outperform TWTA technology in almost all areas, including: 

  1. Reliability 
  2. Energy efficiency 
  3. Size and weight 
  4. Linearity and spectral purity 
  5. Thermal management 
  6. Instant On/Off 
  7. Lifetime cost 

Despite its technical dominance, SSPA technology continues to wait in the wings for many who choose to stick with their legacy systems. Old habits understandably die hard in satcom, where any risk to signal consistency is critical and upfront costs for new infrastructure are sometime hard to justify. 

In an industry where maximising data transmission rates and efficiency at the lowest cost is the name of the game, slow action on Ka-Band BUC’s might turn out to be the riskiest choice. 

Why the rain problem has faded for Ka-Band  

Ka-band frequencies (28.5 to 31 GHZ) are significantly affected by rain and other atmospheric conditions – commonly termed “rain fade”.  This can cause signal attenuation and degradation during heavy rainfall, which means decreased signal strength, reduced data rates, or even a temporary loss of signal. 

C and Ku-Band using TWTAs are traditionally favoured in high rain regions throughout the globe due to their higher output power, allowing them to overcome some signal attenuation – though at the cost of efficiency and bulkiness compared to SSPAs. 

Recent years have seen a proliferation of mitigation techniques to shield Ka-Band setups from the rain fade threat, providing transmission resilience in all but the most extreme weather. They include: 

Adaptive Coding and Modulation (ACM) 

This technique dynamically adjusts the modulation scheme and coding rate based on current weather conditions to maintain a reliable connection. 

Power Control 

Increasing the transmission power during heavy rain can help compensate for signal loss. 

Diversity Techniques 

Using multiple antennas or sites (spatial diversity) can provide alternative signal paths, reducing the likelihood of complete signal loss. 

Weather Prediction Models 

Implementing prediction models helps in anticipating and mitigating the impact of rain fade. 

Backup Links 

Establishing backup links in different frequency bands (e.g., Ku-band or C-band) can help provide  resilience. 

Different mitigation techniques might be relevant for you depending on your infrastructure, environmental conditions, and performance requirements. Careful consideration of the rain fade risk profile, and the appropriate choices for mitigation, are critical for operators during the design and implementation phase of Ka-Band ground systems. 

Ka-Band SSPA vs. TWTA: A technical comparison 

With the rain fade issue largely nullified and SSPAs narrowing the gap in terms of raw output power, the scales are tipping when it comes to optimal infrastructure configurations. Let’s look at the key areas in which solid state power is going toe-to-toe with the incumbent travelling wave tube amplifier. 

Reliability 

SSPAs have no internal moving parts,  significantly enhancing their reliability and longevity. You’ll typically find them to have much longer operational lifespans and require less maintenance than TWTAs and their electron tubes. 

The performance of the tubes can degrade over time, leading to higher maintenance needs and shorter lifespans for your equipment. 

Energy efficiency 

Generally, SSPAs are more energy-efficient than TWTAs. They convert more input power into RF output power, resulting in lower power consumption and operational costs. TWTAs are less efficient, demand more power, and lose  a significant portion of their input power as heat. 

This has important implications for your bottom line, as TWTAs become a more expensive operational cost  over time. 

It’s more costly for the planet, too. Higher energy usage  means a higher carbon footprint and greater costs. SSPAs might emerge as an increasingly important step towards sustainable operations. 

Size and weight 

SSPAs are typically smaller and lighter, making them easier to integrate into various systems. They are ideal for applications where space and weight are critical considerations, such as in teleports and mobile communication units. 

TWTAs are generally bulkier and heavier, which can be a drawback in space-constrained applications. Overall, you can expect your SSPA system to occupy less space than a tube-based amplifier.  

Linearity and spectral purity 

At high frequencies like Ka-band, even minor non-linearities can significantly distort your signal. This can lead to increased errors, data corruption, and reduced signal integrity. 

SSPAs offer better linearity and spectral purity, which is crucial for good quality signal transmission, particularly in high-frequency bands like Ka-Band. 

While TWTAs can provide high power outputs, they may suffer from non-linearity issues that can degrade signal quality. 

By choosing SSPAs, you will minimise the occurrence of signal distortions and other unwanted frequency components. 

Thermal management 

Due to their higher efficiency, SSPAs generate less heat, simplifying thermal management requirements. This can lead to more compact and less complex cooling solutions, likely resulting in lower maintenance headaches and reduced operating costs. You’ll be able to configure your SSPAs in dense or specific ways, allowing for a greater range of solutions to meet the requirements of any project. 

TWTAs produce more heat, necessitating more robust and often more cumbersome systems for cooling, with knock-on impacts for your energy costs, carbon emissions and the size of your equipment. 

Instant On/Off 

SSPAs can be turned on and off instantly without warm-up or cool-down periods, providing greater operational flexibility. You’ll be able to shut your amplifiers down when not in use, or turn off some units if full capacity isn’t required, saving energy and money. 

TWTAs typically require a warm-up period before they can operate at full capacity and a cool-down period after use, so are often operated for larger periods of time and when they aren’t fully required. 

Lifetime cost 

Although the initial cost of high powered SSPAs could be more expensive, their lower maintenance requirements and longer lifespan can lead to lower total cost of ownership over time. 

In modern satellite communication applications, efficiency, reliability, and performance are paramount – and shine a light on SSPAs as the ideal choice for forward-looking operations. 

In modern satellite communication applications, efficiency, reliability, and performance are paramount – and shine a light on SSPAs as the ideal choice for forward-looking operations. 

Closing thoughts 

With the weather related risks clearing away for Ka-Band systems, it’s fast becoming the high-capacity transmission frequency of choice. 

Reduced weather risks mean that within the Ka-band options, cost-benefit calculations have shifted in favour of SSPAs. They’re quickly pulling ahead in a number of key performance areas, offering operators a range of impressive output, reliability and sustainability gains. 

At Milexia, we understand the constant need to balance between reliability and cost effectiveness when developing satcom infrastructure. It’s clear that the new generation of Ka-Band SSPAs offer unprecedented flexibility, along with a tranche of new efficiencies, for operators with an eye on the future. 

As a leading value-added distributor of satcom equipment, connected to globally leading suppliers, Milexia is perfectly placed to advise on the best hardware and designs for high-performance satcom operations.  

Whether you’re looking to construct new Ka-Band infrastructure, move up from a legacy system, or simply boost performance, SSPAs are certain to play a role. 

L’émergence des SSPA en bande Ka dans les installations de télécommunications par satellite

Pendant des années, les amplificateurs de puissance à état solide (SSPA) en bande Ka étaient rarement utilisés pour la transmission de données à haut débit. Incapables d’offrir la fiabilité ou le rapport coût-efficacité dont les diffuseurs avaient besoin, les professionnels les délaissaient au profit des amplificateurs à tube à ondes progressives (TWTA) pour la plupart des applications.

En 2024, la situation s’est inversée. Les capacités modernes des SSPA en bande Ka sont presque méconnaissables par rapport à leurs homologues des décennies précédentes. Les géants du secteur comme SpaceX (Starlink), Amazon (Project Kuiper) et Telesat (Project Light Speed) ont tous fait de la bande Ka un pilier central de leur couverture Internet mondiale et de leurs opérations de communication par satellite, et une grande partie de cette capacité repose sur la technologie SSPA.

Qu’est-ce qui a changé ? En résumé : l’atténuation des effets météorologiques et la technologie. Traditionnellement le talon d’Achille de la transmission en bande Ka, la sensibilité à la pluie et aux autres conditions atmosphériques était une vulnérabilité de cette fréquence. Grâce à un certain nombre de développements technologiques désormais disponibles, cette faiblesse a largement disparu.

La résistance à l’atténuation due à la pluie était le point fort des fréquences en bande C et Ku. Maintenant, avec de nouveaux schémas de modulation et des améliorations dans toute la chaîne RF, les forces des systèmes en bande Ka se révèlent pleinement.

Les amplificateurs de puissance à état solide (SSPA) en bande Ka surpassent la technologie TWTA dans presque tous les domaines, notamment :

  1. Fiabilité
  2. Efficacité énergétique
  3. Taille et poids
  4. Linéarité et pureté spectrale
  5. Gestion thermique
  6. Activation/désactivation instantanée
  7. Coût sur la durée de vie

Malgré sa domination technique, la technologie SSPA continue d’attendre son heure pour beaucoup de ceux qui choisissent de s’en tenir à leurs systèmes existants. Les vieilles habitudes meurent difficilement dans le domaine des communications par satellite, où tout risque pour la cohérence du signal est critique et les coûts initiaux pour une nouvelle infrastructure sont parfois difficiles à justifier.

Dans une industrie où maximiser les taux de transmission de données et l’efficacité au moindre coût est le nom du jeu, une action lente sur les BUC en bande Ka pourrait s’avérer être le choix le plus risqué.

Pourquoi le problème de la pluie s’est estompé pour la bande Ka

Les fréquences de la bande Ka (28,5 à 31 GHz) sont significativement affectées par la pluie et d’autres conditions atmosphériques – communément appelées “atténuation due à la pluie”. Cela peut causer une atténuation et une dégradation du signal pendant les fortes pluies, ce qui signifie une diminution de la puissance du signal, une réduction des débits de données, ou même une perte temporaire du signal.

Les bandes C et Ku utilisant des TWTA sont traditionnellement préférées dans les régions à forte pluviosité à travers le globe en raison de leur puissance de sortie plus élevée, leur permettant de surmonter une certaine atténuation du signal – bien qu’au détriment de l’efficacité et de l’encombrement par rapport aux SSPA.

Ces dernières années ont vu une prolifération de techniques d’atténuation pour protéger les installations en bande Ka de la menace d’atténuation due à la pluie, offrant une résilience de transmission dans toutes les conditions météorologiques sauf les plus extrêmes. Elles comprennent :

Codage et modulation adaptatifs (ACM)

Cette technique ajuste dynamiquement le schéma de modulation et le taux de codage en fonction des conditions météorologiques actuelles pour maintenir une connexion fiable.

Contrôle de puissance

Augmenter la puissance de transmission pendant les fortes pluies peut aider à compenser la perte de signal.

Techniques diversifiés

L’utilisation de multiples antennes ou sites (diversité spatiale) peut fournir des chemins de signal alternatifs, réduisant la probabilité d’une perte complète du signal.

Modèles de prévision météorologique

La mise en œuvre de modèles de prévision aide à anticiper et à atténuer l’impact de l’atténuation due à la pluie.

Liens de secours

L’établissement de liens de secours dans différentes bandes de fréquences (par exemple, bande Ku ou bande C) peut aider à assurer la résilience.

Different mitigation techniques might be relevant for you depending on your infrastructure, environmental conditions, and performance requirements. Careful consideration of the rain fade risk profile, and the appropriate choices for mitigation, are critical for operators during the design and implementation phase of Ka-Band ground systems. 

SSPA en bande Ka vs. TWTA : Une comparaison technique

Avec le problème de l’atténuation due à la pluie largement neutralisé et les SSPA comblant l’écart en termes de puissance de sortie brute, la balance penche lorsqu’il s’agit de configurations d’infrastructure optimales. Examinons les domaines clés dans lesquels la puissance à l’état solide rivalise avec l’amplificateur à tube à ondes progressives.

Fiabilité

Les SSPA n’ont pas de pièces mobiles internes, ce qui améliore considérablement leur fiabilité et leur longévité. Vous constaterez généralement qu’ils ont des durées de vie opérationnelles beaucoup plus longues et nécessitent moins d’entretien que les TWTA et leurs tubes à électrons.

Les performances des tubes peuvent se dégrader au fil du temps, entraînant des besoins de maintenance plus élevés et des durées de vie plus courtes pour votre équipement.

Efficacité énergétique

En général, les SSPA sont plus écoénergétiques que les TWTA. Ils convertissent plus de puissance d’entrée en puissance de sortie RF, ce qui se traduit par une consommation d’énergie et des coûts d’exploitation plus faibles. Les TWTA sont moins efficaces, demandent plus de puissance et perdent une partie importante de leur puissance d’entrée sous forme de chaleur.

Cela a des implications importantes pour votre résultat net, car les TWTA deviennent un coût opérationnel plus élevé au fil du temps.

C’est aussi plus coûteux pour la planète. Une consommation d’énergie plus élevée signifie une empreinte carbone plus importante et des coûts plus élevés. Les SSPA pourraient s’imposer comme une étape de plus en plus importante vers des opérations durables.

Taille et poids

Les SSPA sont généralement plus petits et plus légers, ce qui les rend plus faciles à intégrer dans divers systèmes. Ils sont idéaux pour les applications où l’espace et le poids sont des considérations critiques, comme dans les téléports et les unités de communication mobiles.

Les TWTA sont généralement plus volumineux et plus lourds, ce qui peut être un inconvénient dans les applications où l’espace est limité. Dans l’ensemble, vous pouvez vous attendre à ce que votre système SSPA occupe moins d’espace qu’un amplificateur à tube.

Linéarité et pureté spectrale

À des fréquences élevées comme la bande Ka, même des non-linéarités mineures peuvent déformer considérablement votre signal. Cela peut entraîner une augmentation des erreurs, une corruption des données et une réduction de l’intégrité du signal.

Les SSPA offrent une meilleure linéarité et pureté spectrale, ce qui est crucial pour une transmission de signal de bonne qualité, en particulier dans les bandes de fréquences élevées comme la bande Ka.

Bien que les TWTA puissent fournir des puissances de sortie élevées, ils peuvent souffrir de problèmes de non-linéarité qui peuvent dégrader la qualité du signal.

En choisissant les SSPA, vous minimiserez l’apparition de distorsions du signal et d’autres composantes de fréquence indésirables.

Gestion thermique

En raison de leur efficacité plus élevée, les SSPA génèrent moins de chaleur, simplifiant les exigences de gestion thermique. Cela peut conduire à des solutions de refroidissement plus compactes et moins complexes, ce qui se traduit probablement par moins de maux de tête de maintenance et des coûts d’exploitation réduits. Vous pourrez configurer vos SSPA de manière dense ou spécifique, permettant une plus grande gamme de solutions pour répondre aux exigences de tout projet.

Les TWTA produisent plus de chaleur, nécessitant des systèmes de refroidissement plus robustes et souvent plus encombrants, avec des impacts en cascade sur vos coûts énergétiques, vos émissions de carbone et la taille de votre équipement.

Activation/désactivation instantanée

Les SSPA peuvent être allumés et éteints instantanément sans périodes de préchauffage ou de refroidissement, offrant une plus grande flexibilité opérationnelle. Vous pourrez arrêter vos amplificateurs lorsqu’ils ne sont pas utilisés, ou éteindre certaines unités si la pleine capacité n’est pas requise, économisant ainsi de l’énergie et de l’argent.

Les TWTA nécessitent généralement une période de préchauffage avant de pouvoir fonctionner à pleine capacité et une période de refroidissement après utilisation, ils sont donc souvent exploités pendant de plus longues périodes et lorsqu’ils ne sont pas pleinement nécessaires.

Coût sur la durée de vie

Bien que le coût initial des SSPA haute puissance puisse être plus élevé, leurs besoins de maintenance réduits et leur durée de vie plus longue peuvent conduire à un coût total de possession inférieur au fil du temps.

Dans les applications modernes de communication par satellite, l’efficacité, la fiabilité et les performances sont primordiales – et mettent en lumière les SSPA comme le choix idéal pour des opérations tournées vers l’avenir.

Réflexions finales

Avec la diminution des risques liés aux conditions météorologiques pour les systèmes en bande Ka, celle-ci devient rapidement la fréquence de transmission à haute capacité de choix.

La réduction des risques météorologiques signifie que, parmi les options de la bande Ka, les calculs coûts-avantages ont basculé en faveur des SSPA. Ils prennent rapidement la tête dans un certain nombre de domaines de performance clés, offrant aux opérateurs une gamme de gains impressionnants en termes de sortie, de fiabilité et de durabilité.

Chez Milexia, nous comprenons le besoin constant d’équilibrer fiabilité et rentabilité lors du développement d’infrastructures de communication par satellite. Il est clair que la nouvelle génération de SSPA en bande Ka offre une flexibilité sans précédent, ainsi qu’une série de nouvelles efficacités, pour les opérateurs ayant un œil sur l’avenir.

En tant que distributeur à valeur ajoutée leader d’équipements de communication par satellite, connecté à des fournisseurs leaders mondiaux, Milexia est parfaitement placé pour conseiller sur le meilleur matériel et les meilleures conceptions pour des opérations de communication par satellite à haute performance.

Que vous cherchiez à construire une nouvelle infrastructure en bande Ka, à passer d’un système existant, ou simplement à améliorer les performances, les SSPA sont certains de jouer un rôle.

L’ascesa degli amplificatori di potenza a stato solido (SSPA) in banda Ka nella tecnologia dei teletrasporti

Per anni, gli amplificatori di potenza a stato solido (SSPA) in banda Ka sono stati utilizzati di rado per la trasmissione di dati ad alta velocità. Non essendo in grado di offrire il tipo di affidabilità o di economicità richiesta dalle emittenti, i professionisti li hanno abbandonati a favore degli amplificatori a tubo a onda mobile (TWTA) per la maggior parte delle applicazioni.

Nel 2024, i poli si sono invertiti. Le moderne capacità SSPA in banda Ka sono quasi irriconoscibili rispetto alle loro controparti dei decenni precedenti. Titani del settore come SpaceX (Starlink), Amazon (Project Kuiper) e Telesat (Project Light Speed) hanno fatto della banda Ka un pilastro centrale della loro copertura Internet globale e delle operazioni di comunicazione satellitare, e gran parte di questa capacità è dovuta alla tecnologia SSPA.

Cosa è cambiato? In parole povere, la mitigazione del tempo e la tecnologia. Tradizionalmente il tallone d’Achille della trasmissione in banda Ka, la sensibilità alla pioggia e ad altre condizioni atmosferiche, erano una vulnerabilità della frequenza. Grazie a una serie di sviluppi tecnologici, questa debolezza è in gran parte scomparsa.

La resistenza alla pioggia è stata la salvezza della frequenza in banda C e Ku. Ora, grazie ai nuovi schemi di modulazione e ai miglioramenti dell’intera catena RF, i punti di forza dei sistemi in banda Ka risplendono.

Gli amplificatori di potenza a stato solido (SSPA) in banda Ka superano la tecnologia TWTA in quasi tutte le aree, tra cui:

  1. Affidabilità
  2. Efficienza energetica
  3. Dimensioni e peso
  4. Linearità e purezza spettrale
  5. Gestione termica
  6. Accensione/spegnimento istantaneo
  7. Lifetime cost 

Nonostante il suo dominio tecnico, la tecnologia SSPA continua a rimanere in attesa per molti che scelgono di rimanere fedeli ai loro sistemi tradizionali. Le vecchie abitudini sono dure a morire nel settore SatCom, dove ogni rischio per la coerenza del segnale è critico e i costi iniziali per le nuove infrastrutture sono talvolta difficili da giustificare.

In un settore in cui la massimizzazione della velocità e dell’efficienza di trasmissione dei dati al minor costo è la parola d’ordine, un’azione lenta sui BUC in banda Ka potrebbe rivelarsi la scelta più rischiosa.

Perché il problema della pioggia è svanito per la banda Ka

Le frequenze in banda Ka (da 28,5 a 31 GHZ) sono significativamente influenzate dalla pioggia e da altre condizioni atmosferiche, comunemente definite “rain fade”. Questo può causare l’attenuazione e la degradazione del segnale in caso di forti piogge, con conseguente diminuzione della potenza del segnale, riduzione della velocità di trasmissione dei dati o addirittura perdita temporanea del segnale.

I TWTA in banda C e Ku sono tradizionalmente preferiti nelle regioni ad alta piovosità in tutto il mondo grazie alla loro maggiore potenza di uscita, che consente loro di superare una certa attenuazione del segnale, anche se a costo dell’efficienza e dell’ingombro rispetto agli SSPA.

Negli ultimi anni si è assistito a una proliferazione di tecniche di mitigazione per proteggere le configurazioni in banda Ka dalla minaccia dell’attenuazione della pioggia, garantendo la resilienza della trasmissione in tutte le condizioni meteorologiche, tranne quelle più estreme. Queste tecniche includono:

Adaptive Coding and Modulation (ACM) 

Questa tecnica regola dinamicamente lo schema di modulazione e il tasso di codifica in base alle condizioni meteorologiche attuali per mantenere una connessione affidabile.

Power Control 

L’aumento della potenza di trasmissione in caso di pioggia intensa può aiutare a compensare la perdita di segnale.

Diversity Techniques 

L’uso di più antenne o siti (diversità spaziale) può fornire percorsi alternativi per il segnale, riducendo la probabilità di perdita completa del segnale.

Weather Prediction Models 

L’implementazione di modelli di previsione aiuta ad anticipare e mitigare l’impatto della pioggia.

Backup Links 

La creazione di collegamenti di backup in bande di frequenza diverse (ad esempio, banda Ku o banda C) può contribuire a garantire resilienza.

A seconda dell’infrastruttura, delle condizioni ambientali e dei requisiti di prestazione, potrebbero essere utili diverse tecniche di mitigazione. Un’attenta considerazione del profilo di rischio di rain fade e le scelte appropriate per la mitigazione sono fondamentali per gli operatori durante la fase di progettazione e implementazione dei sistemi terrestri in banda Ka.

Ka-Band SSPA vs. TWTA: A technical comparison 

Con il problema del “rain fade” ampiamente annullato e con gli SSPA che riducono il divario in termini di potenza d’uscita grezza, l’ago della bilancia si sta spostando sulle configurazioni ottimali delle infrastrutture. Esaminiamo le aree principali in cui l’alimentazione a stato solido si confronta con l’amplificatore a tubi a onda mobile.

Affidabilità

Gli SSPA non hanno parti mobili interne, il che ne aumenta notevolmente l’affidabilità e la longevità. In genere hanno una durata operativa molto più lunga e richiedono meno manutenzione dei TWTA e dei loro tubi elettronici.

Le prestazioni dei tubi possono deteriorarsi con il passare del tempo, determinando una maggiore necessità di manutenzione e una durata di vita più breve per le apparecchiature.

Efficienza energetica

In generale, gli SSPA sono più efficienti dal punto di vista energetico rispetto ai TWTA. Convertono una maggiore quantità di potenza in ingresso in potenza in uscita RF, con conseguente riduzione del consumo energetico e dei costi operativi. I TWTA sono meno efficienti, richiedono più energia e perdono una parte significativa della potenza in ingresso sotto forma di calore.

Questo ha importanti implicazioni per i vostri profitti, in quanto i TWTA diventano un costo operativo più oneroso nel tempo.

È più costoso anche per il pianeta. Un maggiore utilizzo di energia significa un’impronta di carbonio più elevata e costi maggiori. Le SSPA potrebbero emergere come un passo sempre più importante verso le operazioni sostenibili.

Dimensione e peso

Gli SSPA sono tipicamente più piccoli e leggeri, il che ne facilita l’integrazione in vari sistemi. Sono ideali per le applicazioni in cui lo spazio e il peso sono fattori critici, come nei teleporti e nelle unità di comunicazione mobile.

I TWTA sono generalmente più ingombranti e pesanti, il che può costituire un inconveniente nelle applicazioni con limiti di spazio. In generale, il sistema SSPA occupa meno spazio di un amplificatore a tubi.

Linearità e e spectral purity 

Ad alte frequenze come la banda Ka, anche piccole non linearità possono distorcere significativamente il segnale. Questo può portare a un aumento degli errori, alla corruzione dei dati e a una riduzione dell’integrità del segnale.

Gli SSPA offrono una migliore linearità e purezza spettrale, che è fondamentale per una trasmissione del segnale di buona qualità, in particolare nelle bande ad alta frequenza come la banda Ka.

Sebbene i TWTA possano fornire potenze elevate, possono soffrire di problemi di non linearità che possono degradare la qualità del segnale.

Scegliendo gli SSPA, si riduce al minimo la presenza di distorsioni del segnale e di altre componenti di frequenza indesiderate.

Gestione termica

Grazie alla loro maggiore efficienza, gli SSPA generano meno calore, semplificando i requisiti di gestione termica. Questo può portare a soluzioni di raffreddamento più compatte e meno complesse, con probabili minori problemi di manutenzione e costi operativi ridotti. Potrete configurare i vostri SSPA in modi densi o specifici, consentendo una maggiore gamma di soluzioni per soddisfare i requisiti di qualsiasi progetto.

I TWTA producono più calore e richiedono sistemi di raffreddamento più robusti e spesso più ingombranti, con ripercussioni sui costi energetici, sulle emissioni di carbonio e sulle dimensioni delle apparecchiature.

Instant On/Off 

Gli SSPA possono essere accesi e spenti istantaneamente senza periodi di riscaldamento o raffreddamento, garantendo una maggiore flessibilità operativa. Potrete spegnere gli amplificatori quando non sono in uso o spegnere alcune unità se non è richiesta la piena capacità, risparmiando energia e denaro.

I TWTA richiedono in genere un periodo di riscaldamento prima di poter funzionare a pieno regime e un periodo di raffreddamento dopo l’uso, quindi vengono spesso utilizzati per periodi di tempo più lunghi e quando non sono pienamente necessari.

Lifetime cost 

Although the initial cost of high powered SSPAs could be more expensive, their lower maintenance requirements and longer lifespan can lead to lower total cost of ownership over time. 

In modern satellite communication applications, efficiency, reliability, and performance are paramount – and shine a light on SSPAs as the ideal choice for forward-looking operations. 

In modern satellite communication applications, efficiency, reliability, and performance are paramount – and shine a light on SSPAs as the ideal choice for forward-looking operations. 

Riflessioni conclusive

Con l’azzeramento dei rischi meteorologici per i sistemi in banda Ka, questa sta rapidamente diventando la frequenza di trasmissione ad alta capacità preferita.

La riduzione dei rischi meteorologici fa sì che, nell’ambito delle opzioni in banda Ka, i calcoli costi-benefici si siano spostati a favore degli SSPA. Questi ultimi stanno rapidamente guadagnando terreno in una serie di aree di prestazioni chiave, offrendo agli operatori una serie di vantaggi impressionanti in termini di produzione, affidabilità e sostenibilità.

Noi di Milexia siamo consapevoli della costante necessità di trovare un equilibrio tra affidabilità e convenienza nello sviluppo di infrastrutture satellitari. È chiaro che la nuova generazione di SSPA in banda Ka offre una flessibilità senza precedenti, insieme a una serie di nuove efficienze, per gli operatori che guardano al futuro.

In qualità di distributore a valore aggiunto di apparecchiature satellitari, collegato a fornitori leader a livello mondiale, Milexia è in grado di consigliare l’hardware e i progetti migliori per operazioni satellitari ad alte prestazioni.

Sia che stiate cercando di costruire una nuova infrastruttura in banda Ka, sia che vogliate passare da un sistema preesistente, sia che vogliate semplicemente aumentare le prestazioni, gli SSPA possono sicuramente svolgere un ruolo importante.

El Auge de los Amplificadores de Estado Sólido de Banda Ka (SSPAs) en la Tecnología de Telepuertos

Durante años, los amplificadores de estado sólido de banda Ka (SSPAs) se usaban raramente para la transmisión de datos a alta velocidad. Al no poder ofrecer el tipo de fiabilidad o rentabilidad que los radiodifusores necesitaban, los profesionales los pasaban por alto en favor de los amplificadores de tubo de ondas viajeras (TWTAs) para la mayoría de las aplicaciones.

En 2024, la situación se ha invertido. Las capacidades modernas de los SSPAs de banda Ka son casi irreconocibles en comparación con sus homólogos de décadas anteriores. Titánes del sector como SpaceX (Starlink), Amazon (Project Kuiper) y Telesat (Project Light Speed) han hecho de la banda Ka un pilar central de su cobertura global de Internet y operaciones de comunicación por satélite, y gran parte de esta capacidad se debe a la tecnología SSPA.

¿Qué ha cambiado? En pocas palabras: la mitigación del clima y la tecnología. Tradicionalmente, el talón de Aquiles de la transmisión en banda Ka era la sensibilidad a la lluvia y otras condiciones atmosféricas, lo que representaba una vulnerabilidad para la frecuencia. Con una serie de avances tecnológicos ahora disponibles, esta debilidad ha desaparecido en gran medida.

La resistencia a la atenuación por lluvia era la salvación de las frecuencias de banda C y Ku. Ahora, con nuevos esquemas de modulación y mejoras en toda la cadena de RF, las fortalezas de los sistemas de banda Ka brillan con luz propia.

Los amplificadores de estado sólido de banda Ka (SSPA) superan la tecnología TWTA en casi todos los aspectos, incluyendo:

  1. Fiabilidad
  2. Eficiencia energética
  3. Tamaño y peso
  4. Linealidad y pureza espectral
  5. Gestión térmica
  6. Encendido/Apagado instantáneo
  7. Costo de vida útil

A pesar de su dominio técnico, la tecnología SSPA sigue esperando su oportunidad, mientras muchos optan por mantener sus sistemas heredados. Es comprensible que sea difícil dejar atrás viejos hábitos en la SatCom, donde cualquier riesgo para la consistencia de la señal es crítico y los costos iniciales para una nueva infraestructura a veces son difíciles de justificar.

En una industria donde maximizar las tasas de transmisión de datos y la eficiencia al menor costo es la clave, la lenta adopción de los BUCs de banda Ka podría resultar ser la opción más arriesgada.

Por qué el problema de la lluvia ha disminuido para la banda Ka.  

Las frecuencias de banda Ka (28.5 a 31 GHz) se ven significativamente afectadas por la lluvia y otras condiciones atmosféricas, un fenómeno comúnmente conocido como “atenuación por lluvia”. Esto puede causar atenuación y degradación de la señal durante lluvias intensas, lo que se traduce en una disminución de la potencia de la señal, reducción de las tasas de datos, e incluso una pérdida temporal de la señal.

Las bandas C y Ku que utilizan TWTAs han sido tradicionalmente preferidas en regiones con alta pluviosidad en todo el mundo debido a su mayor potencia de salida, lo que les permite superar parte de la atenuación de la señal, aunque a costa de la eficiencia y del tamaño en comparación con los SSPAs.

En los últimos años, se ha visto una proliferación de técnicas de mitigación para proteger las configuraciones de banda Ka de la amenaza de la atenuación por lluvia, proporcionando resiliencia en la transmisión en todos menos en los climas más extremos. Estas incluyen:

Modulación y Codificación Adaptativa (MCA)

Esta técnica ajusta dinámicamente el esquema de modulación y la tasa de codificación según las condiciones meteorológicas actuales para mantener una conexión confiable.

Control de Potencia

Aumentar la potencia de transmisión durante lluvias intensas puede ayudar a compensar la pérdida de señal.

Técnicas de Diversidad

El uso de múltiples antenas o sitios (diversidad espacial) puede proporcionar rutas alternativas para la señal, reduciendo la probabilidad de una pérdida total de la señal.

Modelos de Predicción Meteorológica

La implementación de modelos de predicción ayuda a anticipar y mitigar el impacto de la atenuación por lluvia.

Enlaces de Respaldo

Establecer enlaces de respaldo en diferentes bandas de frecuencia (por ejemplo, banda Ku o banda C) puede proporcionar mayor resiliencia.

Diferentes técnicas de mitigación pueden ser relevantes para ti según tu infraestructura, condiciones ambientales y requisitos de rendimiento. Una consideración cuidadosa del perfil de riesgo de atenuación por lluvia, y las elecciones adecuadas de mitigación, son fundamentales para los operadores durante la fase de diseño e implementación de los sistemas terrestres de banda Ka.

SSPA de Banda Ka vs. TWTA: Una Comparación Técnica

Con el problema de la atenuación por lluvia en gran medida resuelto y con los SSPAs reduciendo la brecha en términos de potencia de salida, la balanza está inclinándose hacia configuraciones de infraestructura óptimas. Veamos las áreas clave en las que la potencia de estado sólido está enfrentándose al amplificador de tubo de ondas viajeras (TWTA) tradicional.

Fiabilidad

Los SSPAs no tienen partes internas móviles, lo que mejora significativamente su fiabilidad y longevidad. Por lo general, tienen una vida útil operativa más larga y requieren menos mantenimiento que los TWTAs y sus tubos electrónicos.

El rendimiento de los tubos puede degradarse con el tiempo, lo que lleva a mayores necesidades de mantenimiento y una vida útil más corta para tu equipo.

Eficiencia energética

En general, los SSPAs son más eficientes energéticamente que los TWTAs. Convierten más potencia de entrada en potencia de salida de RF, lo que resulta en un menor consumo de energía y menores costos operativos. Los TWTAs son menos eficientes, demandan más energía y pierden una parte significativa de su potencia de entrada en forma de calor.

Esto tiene importantes implicaciones para tus costos, ya que los TWTAs se convierten en un costo operativo más caro a lo largo del tiempo.

También es más costoso para el planeta. Un mayor uso de energía significa una mayor huella de carbono y mayores costos. Los SSPAs podrían convertirse en un paso cada vez más importante hacia operaciones sostenibles.

Tamaño y peso

Los SSPAs son típicamente más pequeños y ligeros, lo que los hace más fáciles de integrar en varios sistemas. Son ideales para aplicaciones donde el espacio y el peso son consideraciones críticas, como en telepuertos y unidades de comunicación móvil.

Los TWTAs son generalmente más voluminosos y pesados, lo que puede ser una desventaja en aplicaciones con limitaciones de espacio. En general, puedes esperar que tu sistema SSPA ocupe menos espacio que un amplificador basado en tubos.

Linealidad y pureza espectral

A frecuencias altas como la banda Ka, incluso pequeñas no linealidades pueden distorsionar significativamente tu señal, lo que puede llevar a errores, corrupción de datos y reducción de la integridad de la señal.

Los SSPAs ofrecen mejor linealidad y pureza espectral, lo cual es crucial para una transmisión de señal de buena calidad, especialmente en bandas de alta frecuencia como la banda Ka.

Si bien los TWTAs pueden proporcionar altas salidas de potencia, pueden sufrir problemas de no linealidad que pueden degradar la calidad de la señal.

Al elegir SSPAs, minimizarás la ocurrencia de distorsiones de señal y otros componentes de frecuencia no deseados.

Gestión térmica

Debido a su mayor eficiencia, los SSPAs generan menos calor, simplificando los requisitos de gestión térmica. Esto puede llevar a soluciones de enfriamiento más compactas y menos complejas, lo que probablemente resultará en menores dolores de cabeza de mantenimiento y menores costos operativos. Podrás configurar tus SSPAs de manera densa o específica, permitiendo una mayor gama de soluciones para cumplir con los requisitos de cualquier proyecto.

Los TWTAs producen más calor, lo que requiere sistemas de enfriamiento más robustos y, a menudo, más engorrosos, con impactos adicionales en tus costos de energía, emisiones de carbono y el tamaño de tu equipo.

Encendido/Apagado instantáneo

Los SSPAs se pueden encender y apagar instantáneamente sin periodos de calentamiento o enfriamiento, lo que proporciona una mayor flexibilidad operativa. Podrás apagar tus amplificadores cuando no se usen o apagar algunas unidades si no se requiere la capacidad total, ahorrando energía y dinero.

Los TWTAs generalmente requieren un periodo de calentamiento antes de que puedan operar a plena capacidad y un periodo de enfriamiento después de su uso, por lo que a menudo se operan durante períodos más largos y cuando no se necesitan por completo.

Costo de vida útil

Aunque el costo inicial de los SSPAs de alta potencia podría ser más caro, sus menores requisitos de mantenimiento y mayor vida útil pueden llevar a un menor costo total de propiedad con el tiempo.

En las aplicaciones modernas de comunicación por satélite, la eficiencia, fiabilidad y rendimiento son primordiales, y destacan a los SSPAs como la opción ideal para operaciones con visión de futuro.

Reflexiones finales 

Con la disminución de los riesgos climáticos para los sistemas de banda Ka, esta se está convirtiendo rápidamente en la frecuencia de transmisión de alta capacidad preferida.

La reducción de los riesgos climáticos significa que, dentro de las opciones de banda Ka, los cálculos de costo-beneficio se han inclinado a favor de los SSPAs. Están avanzando rápidamente en una serie de áreas clave de rendimiento, ofreciendo a los operadores una gama de mejoras impresionantes en términos de salida, fiabilidad y sostenibilidad.

En Milexia, entendemos la necesidad constante de equilibrar la fiabilidad con la rentabilidad al desarrollar infraestructura satelital. Está claro que la nueva generación de SSPAs de banda Ka ofrece una flexibilidad sin precedentes, junto con una serie de nuevas eficiencias, para los operadores que miran hacia el futuro.

Como un distribuidor líder de equipos Satcom con valor añadido, conectado a proveedores de renombre mundial, Milexia está en una posición ideal para asesorar sobre el mejor hardware y diseños para operaciones satelitales de alto rendimiento.

Ya sea que estés buscando construir una nueva infraestructura de banda Ka, avanzar desde un sistema heredado, o simplemente mejorar el rendimiento, los SSPAs seguramente jugarán un papel clave.

The Rise of Ka-Band Solid State Power Amplifiers (SSPAs) in Teleport Technology

For years, Ka-Band solid state power amplifiers (SSPAs) were rarely used for high data rate transmission. Unable to offer the kind of reliability or cost-effectiveness that broadcasters needed, professionals passed over them in favour of Travelling Wave Tube Amplifiers (TWTAs) for most applications. 

In 2024, the poles have reversed. Modern Ka-Band SSPA capabilities are almost unrecognisable compared to their counterparts of previous decades. Sector titans like SpaceX (Starlink), Amazon (Project Kuiper) and Telesat (Project Light Speed) have all made Ka-Band a central pillar of their global internet coverage and satellite communication operations, and more of this capability is  down to SSPA technology. 

What’s changed? Put simply – weather mitigation and technology. Traditionally the Achilles heel of Ka-Band transmission, sensitivity to rain and other atmospheric conditions were a vulnerability of the frequency. With a number of technological developments now at hand, this weakness has largely disappeared.  

Resistance to rain fade was the saving grace of  the C and Ku-Band frequency. Now with new modulation schemes and improvements in the whole RF chain, the strengths of Ka-Band systems come shining through. 

Ka-Band Solid State Power Amplifiers (SSPA) outperform TWTA technology in almost all areas, including: 

  1. Reliability 
  2. Energy efficiency 
  3. Size and weight 
  4. Linearity and spectral purity 
  5. Thermal management 
  6. Instant On/Off 
  7. Lifetime cost 

Despite its technical dominance, SSPA technology continues to wait in the wings for many who choose to stick with their legacy systems. Old habits understandably die hard in SatCom, where any risk to signal consistency is critical and upfront costs for new infrastructure are sometime hard to justify. 

In an industry where maximising data transmission rates and efficiency at the lowest cost is the name of the game, slow action on Ka-Band BUC’s might turn out to be the riskiest choice. 

Why the rain problem has faded for Ka-Band  

Ka-band frequencies (28.5 to 31 GHZ) are significantly affected by rain and other atmospheric conditions – commonly termed “rain fade”.  This can cause signal attenuation and degradation during heavy rainfall, which  means decreased signal strength, reduced data rates, or even a temporary loss of signal. 

C and Ku-Band using TWTAs are traditionally favoured in high rain regions throughout the globe  due to their higher output power, allowing them to overcome some signal attenuation – though at the cost of efficiency and bulkiness compared to SSPAs. 

Recent years have seen a proliferation of mitigation techniques to shield Ka-Band setups from the rain fade threat, providing transmission resilience in all but the most extreme weather. They include: 

Adaptive Coding and Modulation (ACM) 

This technique dynamically adjusts the modulation scheme and coding rate based on current weather conditions to maintain a reliable connection. 

Power Control 

Increasing the transmission power during heavy rain can help compensate for signal loss. 

Diversity Techniques 

Using multiple antennas or sites (spatial diversity) can provide alternative signal paths, reducing the likelihood of complete signal loss. 

Weather Prediction Models 

Implementing prediction models helps in anticipating and mitigating the impact of rain fade. 

Backup Links 

Establishing backup links in different frequency bands (e.g., Ku-band or C-band) can help provide  resilience. 

Different mitigation techniques might be relevant for you depending on your infrastructure, environmental conditions, and performance requirements. Careful consideration of the rain fade risk profile, and the appropriate choices for mitigation, are critical for operators during the design and implementation phase of Ka-Band ground systems. 

Ka-Band SSPA vs. TWTA: A technical comparison 

With the rain fade issue largely nullified and SSPAs narrowing the gap in terms of raw output power, the scales are tipping when it comes to optimal infrastructure configurations. Let’s look at the key areas in which solid state power is going toe-to-toe with the incumbent travelling wave tube amplifier. 

Reliability 

SSPAs have no internal moving parts,  significantly enhancing their reliability and longevity. You’ll typically find them to have much longer operational lifespans and require less maintenance than TWTAs and their electron tubes. 

The performance of the tubes can degrade over time, leading to higher maintenance needs and shorter lifespans for your equipment. 

Energy efficiency 

Generally, SSPAs are more energy-efficient than TWTAs. They convert more input power into RF output power, resulting in lower power consumption and operational costs. TWTAs are less efficient, demand more power, and lose  a significant portion of their input power as heat. 

This has important implications for your bottom line, as TWTAs become a more expensive operational cost  over time. 

It’s more costly for the planet, too. Higher energy usage  means a higher carbon footprint and greater costs. SSPAs might emerge as an increasingly important step towards sustainable operations. 

Size and weight 

SSPAs are typically smaller and lighter, making them easier to integrate into various systems. They are ideal for applications where space and weight are critical considerations, such as in teleports and mobile communication units. 

TWTAs are generally bulkier and heavier, which can be a drawback in space-constrained applications. Overall, you can expect your SSPA system to occupy less space than a tube-based amplifier.  

Linearity and spectral purity 

At high frequencies like Ka-band, even minor non-linearities can significantly distort your signal. This can lead to increased errors, data corruption, and reduced signal integrity. 

SSPAs offer better linearity and spectral purity, which is crucial for good quality signal transmission, particularly in high-frequency bands like Ka-Band. 

While TWTAs can provide high power outputs, they may suffer from non-linearity issues that can degrade signal quality. 

By choosing SSPAs, you will minimise the occurrence of signal distortions and other unwanted frequency components. 

Thermal management 

Due to their higher efficiency, SSPAs generate less heat, simplifying thermal management requirements. This can lead to more compact and less complex cooling solutions, likely resulting in lower maintenance headaches and reduced operating costs. You’ll be able to configure your SSPAs in dense or specific ways, allowing for a greater range of solutions to meet the requirements of any project. 

TWTAs produce more heat, necessitating more robust and often more cumbersome systems for cooling, with knock-on impacts for your energy costs, carbon emissions and the size of your equipment. 

Instant On/Off 

SSPAs can be turned on and off instantly without warm-up or cool-down periods, providing greater operational flexibility. You’ll be able to shut your amplifiers down when not in use, or turn off some units if full capacity isn’t required, saving energy and money. 

TWTAs typically require a warm-up period before they can operate at full capacity and a cool-down period after use, so are often operated for larger periods of time and when they aren’t fully required. 

Lifetime cost 

Although the initial cost of high powered SSPAs could be more expensive, their lower maintenance requirements and longer lifespan can lead to lower total cost of ownership over time. 

In modern satellite communication applications, efficiency, reliability, and performance are paramount – and shine a light on SSPAs as the ideal choice for forward-looking operations. 

In modern satellite communication applications, efficiency, reliability, and performance are paramount – and shine a light on SSPAs as the ideal choice for forward-looking operations. 

Closing thoughts 

With the weather related risks clearing away for Ka-Band systems, it’s fast becoming the high-capacity transmission frequency of choice. 

Reduced weather risks mean that within the Ka-band options, cost-benefit calculations have shifted in favour of SSPAs. They’re quickly pulling ahead in a number of key performance areas, offering operators a range of impressive output, reliability and sustainability gains. 

At Milexia, we understand the constant need to balance between reliability and cost effectiveness when developing satcom infrastructure. It’s clear that the new generation of Ka-Band SSPAs offer unprecedented flexibility, along with a tranche of new efficiencies, for operators with an eye on the future. 

As a leading value-added distributor of Satcom equipment, connected to globally leading suppliers, Milexia is perfectly placed to advise on the best hardware and designs for high-performance satcom operations.  

Whether you’re looking to construct new Ka-Band infrastructure, move up from a legacy system, or simply boost performance, SSPAs are certain to play a role.