双通带微带滤波器的设计

一种双通带微带滤波器的设计

内容简介：设计了由两个H-谐振器以边缘耦合方式组成的双通带滤波器。在两条平行微带线之间桥接一条微带线，构成一个双频谐振器。随着馈电位置与中间微带线间距的增大，双频谐振器的两个外部品质因数呈相反的趋势变化。随着两个谐振器间距的增大，双频谐振器间对应的两个耦合系数逐渐减小。由此特性，将两个谐振器组合可构成双通带滤波器。

Abstract：In this paper, a dual-band passband filter with two H-resonators by fringe coupling is presented. The dual-band resonator consists of two parallel microstrip lines that are connected by a microstrip line and can show dual-frequency resonance. The two external quality factors change oppositely when the distance between the feed point and the center microstrip line becomes larger. As the distance between the two resonators becomes larger, the coupling coefficients of the dual-band resonator reduce simultaneously. Thus, a dual-band passband filter can be ob- tained by combining the two H-resonators.

作者：韦柳泰,

关键词：H-谐振器, 外部品质因数, 耦合系数, 双通带