Two-Cavity Filter With Three Transmission Zeros
Two-Cavity Filter With Three Transmission Zeros
复制标题
DOI：
10.1109/lmwc.2008.922116
复制
发表时间：
2008-05
影响因子：
3
通讯作者：
Yongzhong Zhu;Yong-jun Xie;H. Feng
中科院分区：
文献类型：
--
作者：
Yongzhong Zhu;Yong-jun Xie;H. Feng
众所周知，具有源-负载耦合的N阶耦合网络可以实现等于N的最大传输零点数。然而，在信中，通过利用开路短截线和增加的速度比，一种新型的双极点发夹滤波器可以获得三个传输零点，这可以提高在低阻带的选择性。利用耦合微带线的类型与传输零点的关系，对滤波器进行了深入的分析。测量和模拟数据之间的良好协议已被证明。
It is well known that an N-order coupling network with source-load coupling can realize a maximum number of transmission zeros equal to N. However, in the letter, by utilizing open-circuited stubs and increasing the velocity ratio, a novel two-pole hairpin filter can obtain three transmission zeros, which can improve selectivity in the lower stopband. The filter is analyzed extensively by using the relations between the types of coupled microstrip lines and transmission zeros of transfer response. Good agreement between measured and simulated data has been demonstrated.