REALIZATION OF AN MMIC ACTIVE FILTER WITH NEGATIVE RESISTANCE CIRCUITS

摘要

This paper presents a kind of the microwave active filter circuit with GaAs MESFET negative resistance property, and the whole circuit can be fabricated by using MMIC process. The element values of the circuit and the computer simulation for the circuit performance are given. The CAD analysis results show that this active filter does have the narrow band property, and gain of more than 10dB at center frequency and the attenuation of more than 30dB at f_0 ±100 MHz are achieved.