Dual-Band Coaxial Filter and Diplexer Using Stub-Loaded Resonators

被引：45
|
作者：
Xie, Ya [1 ]
Chen, Fu-Chang [1 ]
Chu, Qing-Xin [1 ]
Xue, Quan [1 ]
机构：
[1] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R China
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2020年 / 68卷 / 07期
关键词：
Couplings; Resonators; Dual band; Resonant frequency; Q-factor; Impedance; Passband; Coaxial cavity; diplexer; dual-band filter; stub-loaded resonator; CAVITY FILTERS; DESIGN; COMPACT; TRANSCEIVER;
D O I：
10.1109/TMTT.2020.2987558
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：
This article presents a simple design of a coaxial dual-band cavity filter and diplexer using stub-loaded resonators (SLRs). Based on the resonance characteristics of a coaxial SLR, the first two resonant frequencies can be tuned over a wide range by adjusting their structural parameters. Controllable external quality factors can be acquired by using the modified tapping structure for the two designated passbands. A coupling window and a coupling pin are proposed to obtain the expected coupling coefficients in the two bands. To demonstrate this concept, a third-order dual-band bandpass filter and an eight-pole diplexer are designed and fabricated. The measured results agree well with the full-wave simulation results.
引用
收藏
页码：2691 / 2700
页数：10
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