SOTM-40-1

Mlexia’s SOTM-40-1 is a state-of-the-art Ka-Band Satcom-on-the-Move antenna that provides reliable and secure communication for military and government applications.

• Low profile design (waveguide array)
• Tuneless architecture
• Wide-band performance (19.2-21.2 GHz and 29-31 GHz)
• Polariser-free dual-polarisation (4-port design)
• High performance servo drives
• Direct drive – NO gears or belts to wear out
• Brushless DC motors
• Absolute digital encoders – NO homing procedure
• Single/Dual GNSS-enhanced inertial AHRS
• RF/Inertial sensor fusion algorithm

The antenna features a low-profile design, high-gain performance, and fast-tracking capabilities that enable seamless connectivity in challenging environments. The COTM-40-1 is compatible with various satellite platforms and modems, and supports data rates up to 50 Mbps. Whether it is mounted on a vehicle, or vessel, the COTM-40-1 delivers high-quality communication for mission-critical operations.

It uses the latest technology to deliver a high-performance, low-profile and tuneless system that can operate in any polarisation mode.

The antenna system consists of a waveguide array that provides wide band coverage and eliminates the need for external polarisers. It also has a four-port design that supports dual-polarisation without compromising efficiency.

The antenna platform is stabilised by a sophisticated combination of servo drives, brushless motors, absolute digital encoders, GNSS enhanced inertial AHRS and RF/Inertial sensor fusion algorithm. This ensures accurate and reliable pointing in dynamic environments.

Technical Specification:

Antenna Type: Tuneless wideband waveguide array (4-port)

Frequency Range: Rx: 19.2 to 21.2 GHz; Tx: 29.0 to 31.0 GHz (single aperture)

Polarization: Dual circular switchable (embedded polariser)

Measured Antenna Gain: Rx: 32 dBi nominal; Tx: 36 dBi nominal (including diplexer)

Measured Rx Axial Ratio: < 2.0 dB (< 1.5 dB 19.4 to 20.4 GHz)

Measured Tx Axial Ratio: < 2.0 dB (< 1.5 dB 29.1 to 30.7 GHz)

Measured HPBW: Rx: 2 deg on AZ, 6 deg on EL; Tx: 1.5 deg on AZ, 4 deg on EL nominal

Measured port isolation: -70 dB or better over Rx band; -85 dB or better over Tx band nominal

RF Power Handling: 50 W

Power and Signal Interface: MIL-DTL-38999 series III