Compact wideband bandpass filter based on coupled line stub with high selectivity

被引：14
|
作者：
La, Dong-Sheng [1 ]
Guan, Xin [1 ]
Wang, Meng-Yuan [1 ]
Mi, Rong-Qi [1 ]
机构：
[1] Northeastern Univ Qinhuangdao, Sch Comp & Commun Engn, Qinhuangdao 066004, Hebei, Peoples R China
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2021年 / 138卷
关键词：
Bandpass filter; Open parallel coupled line stub; Short parallel coupled line stub; Cross-shaped resonator; Transmission zero; RESONATOR; BPF;
D O I：
10.1016/j.aeue.2021.153872
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Two bandpass filters with the cross shaped resonator and parallel coupled lines are proposed. It has two fixed transmission zeros (TZ) which are located at 0 and 2pi. With the assistance of two types of parallel coupled line, two bandpass filters have other two TZs. Two TZs only depend on the odd and even mode impedance of open parallel coupled line stubs or short parallel coupled line stubs. By adjusting the odd- and even-mode impedance values, two TZs can be adjusted and the frequency selectivity of the bandpass filters are improved. Two bandpass filters are fabricated and measured. The experimental results are basically consistent with the simulation results, which verifies the filter design method.
引用
收藏
页数：6
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