High-frequency Active Filter Design And Simulation

Filters are wide applied in different circuit systems such as communication,signal processing, measurment instrument and power system. So,it's important to design and study active filter using EDA technique.In part one, this paper describe that a mult-order op.amp-based active filter simulation by ADS and Matlab . MAX274 of MAXIM is made use of an eighth order Chebyshev lowpass filter. Its measure results accord with simulatons'.In part two,this paper discuss a kind of method design microwave active filter.The primary research focus on bandpass filter section circuit. Some new expressions and characters are found independently. The phenomenon of high frequency attenuation is illustrated . A design improve the filter's matching network..The novel method contrast occurrences with excellence and good.