Flann Microwave – Antennas

Flann offers a wide range of antenna designs including Standard Gain Horns, Sectoral Horns and Lens Horn Antennas.

Standard Gain Horns

Features

• Weatherproof Options
• Mounting Brackets Options
• Manufactured Brass or Aluminium
• Higher frequency models available

The Flann Standard Gain Horns have a wide range of applications, (e.g. as transmitting, receiving or sampling antennas or for feeding reflectors).

The absolute gain of a standard gain horn is calculable from the flare dimensions. Flann Standard Gain Horns are precision components providing accurate and repeatable gain references.

In general the lower frequency horns, models 06240 to 17240 inclusive, are accurately fabricated from brass sheet or aluminium. Models 18240 to 32240 inclusive are copper electroformed on precision mandrels which ensure high accuracy and repeat-ability. Typical gain/bandwidth curves are provided for all standard gain horns. 10 dB, 15 dB, 20 dB, 25 dB, 30 dB and 33 dB gain horns are also available in many waveguide sizes.

Sectoral Horns

Features

• Low Cost
• High Performance
• Customised Designs Available
• Greater Spectrum Efficiency
• Manufactured from Brass or Aluminium
• E or H Plane Available
• Quotations on Request

The use of the sector antenna has become a very effective method of achieving the broadcast type of coverage required of the base station transmission system as used in LMDS/MVDS systems.

Flann Microwave has developed a series of compact, high performance, low cost sectoral hub antennas for LMDS/MVDS applications. The 64˚ azimuth beam angle is designed to provide the best circular coverage pattern when illuminated from the circle edge taking into account path losses and attenuation due to rain.

Lens Horn Antennas

Features

• 4 – 140 GHz
• High Radiation efficiency (20% smaller aperture than equivalent parabolic antenna)
• Superior sidelobe and crosspolar performance
• Linear and circular feed
• Weatherproofing on Series 820 / 880
• Low wind loading
• Inherently robust
• 30 – 500m diameter

Flann’s range of Lens Horn Antenna have many significant microwave and mechanical advantages over the parabolic or printed antennas, particularly at E-band.
Standard flange designs are available but custom interconnections have been developed to interface directly with customer hardware.