A Dual-Gate FET Constant Phase Variable Power Amplifier

D. Drury, D. Zimmerman, D. E. Zimmerman
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引用次数: 7

Abstract

A 1-Watt X-band variable power amplifier is described which employs an 1800 µm GaAs dual-gate FET. Small-signal models of the device are presented and used to design for minimum insertion phase change over the gain control range. The amplifier has a power-added efficiency of 25 percent and its insertion phase varies less than 15 degrees over a 15 dB gain control range.
一种双栅场效应管恒相可变功率放大器
介绍了一种采用1800µm GaAs双栅场效应管的1瓦x波段可变功率放大器。提出了该器件的小信号模型,并用于在增益控制范围内实现最小插入相位变化的设计。该放大器的功率附加效率为25%,其插入相位在15 dB增益控制范围内变化小于15度。
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