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Satnews Daily
April 21st, 2009

Comtech Xicom Premieres a First Outdoor TWTA at a Greater Power

Xicom Comtech Xicom Technology introduces a new lightweight, outdoor, traveling wave tube amplifier (TWTA), making it the SATCOM industry’s first outdoor packaged 1250 watt TWTA designed to operate in the Ku-band uplink frequency, providing new capabilities to broadcast and teleport operators. These and other new products can be seen at Xicom’s booth, C4942, at the National Association of Broadcasters (NAB) show in Las Vegas.

Comtech Xicom’s new Ku-band amplifier, Model XTD-1250KL, uses a high-efficiency, dual-stage depressed collector, 1.25 kilowatts peak power, TWT to provide 450 watts of linear power at the flange, over the full 13.75 to 14.5 GHz uplink frequency band. As the industry’s first outdoor units designed at this power level, Comtech Xicom’s new TWTAs enable satellite operators to mount the HPA at the antenna, eliminating long waveguide runs and shelter requirements while maintaining high reliability.

In many cases, a single Comtech Xicom TWTA, operating with multiple carriers, can take the place of multiple klystron power amplifiers (KPAs), dramatically reducing both upgrade costs. Reduced power consumption also lowers on-going operating costs and enhances reliability through lower internal operating temperatures.

This new capability is delivered in a rugged weatherized package that measures 21.5” x 12.75” x 12” and weighs 85 lbs. These full-featured amplifiers can be configured for single-thread, redundant, or phase-combined operation and incorporate a range of features including RF gain control, pre-distortion linearizer, solid-state pre-amplifier, and a complete serial monitor and control (M&C) system.