GaAs MMIC 压控带通有源滤波器的一个实现

A Realization of GaAs MMIC Tunable Active Bandpass Filter

采用负阻电路以及由作者自行构造的模型设计的集成化平面肖特基变容管，应用ＧａＡｓＭＭＩＣ技术实现了Ｌ波段大调频范围压控带通滤波器．该滤波器具有２００ＭＨｚ的３ｄＢ带宽，其中心频率调频范围约６００ＭＨｚ，从１．０～１．６４ＧＨｚ，并具有足够的带外抑制比．全部偏置电路均在芯片上，芯片占用面积１．６ｍｍ×１．８ｍｍ．

A second order large tuning range bandpass active filter has been developed with GaAs MMIC technique using negative resistance circuits and integrated planar Schottky diodes designed and optimized in theory developed by authors. The filter has a 200 MHz 3 dB bandwidth and a 600 MHz tuning range of centre frequency, from 1.0～1.64 GHz, and occupies an area of 1.6 mm×1.8 mm on the wafer including all biasing elements.