本文给出了一种利用ＧａＡｓＭＥＳＦＥＴ负阻特性实现的微波单片（简称ＭＭＩＣ）有源滤波电路，并考虑到ＭＭＩＣ工艺兼容性，提出了一种ＧａＡｓＭＥＳＦＥＴ变容管结构，从而实现了滤波器的压控功能．文中还给出了单片电路的设计方法以及ＣＡＤ模拟结果．最后，加工完成了ＭＭＩＣ有源压控滤波器，整个电路芯片尺寸为０．９×１．８ｍｍ２．实验测试结果表明，文中给出的设计方法正确、有效． This paper presents a microwave monolithic (MMIC) active filter circuit using GaAsMESFET negative resistance characteristics, and taking into account the MMIC process compatibility, a GaAsMESFET varactor structure, in order to achieve the filter pressure Control function. The article also gives the design method of single chip and CAD simulation results. Finally, the finished MMIC active voltage-controlled filter, the entire circuit chip size of 0.9 × 1.8mm2. Experimental results show that the design method given in this paper is correct and effective.