一种新颖的微带带通滤波器的设计

介绍一种选择性介于切比雪夫滤波器与椭圆滤波器之间、物理上也易于实现的带通滤波器,给出了它的传输函数,依此在切比雪夫滤波器设计参数的基础上进行该滤波器的综合,然后用耦合谐振滤波器的理论与公式来分析该滤波器的频率响应。该滤波器采用新颖的开环谐振器耦合结构来实现,结果在保持很好的线性与较高的矩形系数的同时,体积也做得较小。

Design of One Novel Microwave Bandpass Filter

One novel microwave bandpass filter is introduced in this paper.This filter,which is easy to be implemented physically,has the skirt selectivity intermediate between Chebyshev filters and the elliptic-function filters. The transfer function of the filter is given,by which this new filter is synthesized basing on the design parameters of Chebyshev filter. Then,its frequency response is analyzed using the general formulation for cross coupled resonator filters. This filter,implemented through microstrip open-loop resonators, has good linearity and high Q parameter as well as small size.