加利福尼亞州卡爾斯巴德的Cobham公司推出兩款2W和10W高效射頻功率放大器(VEPA)。其中VEPA-2W型用于小型無人系統，VEPA-10W型用于需要遠距通信的大型平臺。Cobham公司設計的高效射頻功率放大器，注重考慮尺寸、重量、功率與效率，以滿足數字與模擬通信系統的苛刻要求。
VEPA-2W型放大器體積為3.78立方英寸，重136克。它適用于載荷有限的小型無人飛行器。VEPA-2W型放大器具有39dB的P1dB和30dB增益，能夠提供2瓦的數字信號（3瓦的模擬信號）線性功率輸出。在離散模式下工作時，能夠通過折中放大器的線性度與功率增益來來獲取額外的靈活性。VEPA-10W型放大器用于大型平臺，需要更遠的傳輸距離。其增益為26-41dB可調，能夠提供10瓦的數字信號（20瓦的模擬信號）線性功率輸出。VEPA-2W與VEPA-10W型放大器能工作于軍用L、S以及L/S波段，其他波段也可按要求進行定制。
CARLSBAD, Calif., 15 Dec. 2010. Cobham Surveillance in Carlsbad, Calif., is introducing two very efficient power amplifier (VEPA) devices for amplifying RF signals -- the VEPA-2W RF power amplifier for small applications like unmanned systems, and the VEPA 10W for large platforms that require substantial transmission range.
Cobham designed the VEPA amplifiers with an emphasis on size, weight, power, and efficiency (SWaP) to stand up to demanding requirements of digital and analog communications systems.
The VEPA-2W amplifier measures 3.78 cubic inches and weighs 136 grams. It is for relatively small unmanned vehicles where payload capacity is limited. With a 39dB P1dB and 30dB gain, the VEPA-2W provides as much as 2 Watts of linear output power for digital signals and can be pushed to compression to provide 3 Watts for analog signals.
Discrete operating modes provide additional flexibility by allowing the operator to adjust to application requirements by trading off between linearity and power efficiency.
The VEPA-10W amplifier is for platforms requiring greater transmission distance. Gain is adjustable from 26-41dB, to provide as much as 10 Watts of linear power for digital signals, or pushed to compression to provide 20 Watts for analog signals.
The VEPA-2W and VEPA-10W amplifiers are available in military L, S, and L/S bands. Other bands are available on request. For more information contact Cobham Surveillance online at www.cobham.com/gms.
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