Cobham推出2W和10W RF LNA

加利福尼亚州卡尔斯巴德的Cobham公司推出两款2W和10W高效射频功率放大器(VEPA)。其中VEPA-2W型用于小型无人系统，VEPA-10W 型用于需要远距通信的大型平台。Cobham公司设计的高效射频功率放大器，注重考虑尺寸、重量、功率与效率，以满足数字与模拟通信系统的苛刻要求。

VEPA-2W型放大器体积为3.78立方英寸，重136克。它适用于载荷有限的小型无人飞行器。 VEPA-2W型放大器具有39dB的P1dB和30dB增益，能够提供2瓦的数字信号（3瓦的模拟信号）线性功率输出。在离散模式下工作时，能够通过折中放大器的线性度与功率增益来来获取额外的灵活性。VEPA-10W型放大器用于大型平台，需要更远的传输距离。其增益为26-41dB可调，能够提供 10瓦的数字信号（20瓦的模拟信号）线性功率输出。VEPA-2W与VEPA-10W型放大器能工作于军用L、S以及L/S波段，其他波段也可按要求进行定制。

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.