本文介绍了利用微波晶体管实现稳定、高 Q 电感的原理与方法。对由感性微波晶体管电路构成的1GHz 微带有源滤波器的特性进行了测试。实验表明,这种滤波器的插入损失接近0 dB,带宽可作得很窄,幅频特性比无源实现更为理想。 This article describes the use of microwave transistors to achieve stable, high-Q inductance principle and method. The characteristics of a 1GHz microstrip active filter made up of inductive microwave transistor circuits were tested. Experiments show that the insertion loss of this filter is close to 0 dB, the bandwidth can be made very narrow, and the amplitude-frequency characteristic is more ideal than the passive implementation.