Dual-mode and three-transmission-zeros bandstop filters with closed-loop ring resonators

被引：8

作者：

Her, ML

Lin, QM

Lin, KY

Wu, YD

Wang, YL

机构：

[1] Feng Chia Univ, Dept Commun Engn, Wireless Commun Lab, Taichung, Taiwan

[2] Nankai Coll, Dept Elect Engn, Tsaotun, Nantou, Taiwan

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2005年 / 44卷 / 02期

关键词：

attenuation poles; bandstop filter; perturbation elements; ring resonator; transmission-line model;

D O I：

10.1002/mop.20562

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：

In this paper, ring-resonator bandstop filters (BSFs) with three attenuation poles are designed and analyzed using a two-port ABCD matrix of the transmission-line model. The symmetrical geometry of the ring-type BSFs allows us to explain the resonance operation via even and odd modes. Moreover, perturbation elements are employed to control the attenuation poles and obtain good performances. In order to validate the analytic method, three different BSFs are built using the microstrip-ring resonator. The simulated and measured results are presented and compared with the theory over a wide frequency range. (C) 2004 Wiley Periodicals, Inc.

引用

页码：114 / 118

页数：5

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