Comtech 325W C and Ku-Band, 450W X-Band Tri-Band Low Profile Antenna Mount HPA for Satellite Communications

The XTD-450T1 series are compact, self-contained, antenna mountable power amplifiers designed for low cost installation and long life. The antenna mount design eliminates the need for an amplifier shelter as well as a long waveguide run between the amplifier and the antenna feed; for example, an antenna mounted 350 Watt amplifier with its shorter waveguide run will deliver EIRP compatible to a 600 Watt rack mounted HPA. RF filters, cooling, & monitoring and control systems are all self-contained within the HPA. These features provide high reliability, low maintenance costs, and low replacement costs.

The XTD-450T1 series incorporate high efficiency, dual-stage depressed collector TWTs. Some benefits of the dual-stage collector TWT are: reduced prime power consumption, lower internal operating temperatures, and reliability enhancement. These benefits are obtained for both the linear and saturated modes of operation. One of the features of this unit is incorporation of power factor correction circuitry that minimizes line current distortion and reduces the required volt-amps. The combination of power factor correction and high efficiency TWT reduces input Volt-Amps by 45% when compared to equivalent amplifiers. A high frequency resonant conversion power supply is used that accepts a wide range of prime power (100 to 260 VAC). The automatic features of the power supply include quick recovery from prime power outages and multiple helix fault resets (three fault cycles). A complete microprocessor monitoring and control system is built into the unit, including a RS-232/485 remote interface.

The XTD-450T1 series can be configured to single thread or redundant operation. A remote external controller is available to operate the HPA from a user selected location. Mounting brackets can be supplied to mount the HPA to most popular antennas.