A COMPACT PLANAR BANDPASS FILTER WITH WIDE OUT-OF-BAND REJECTION IMPLEMENTED BY SUBSTRATE-INTEGRATED WAVEGUIDE AND COMPLEMENTARY SPLIT-RING RESONATOR

被引：27

作者：

Deng, Kuan ^{[1
]}

Guo, Zengxu ^{[1
]}

Li, Chao ^{[2
]}

Che, Wenquan ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Dept Commun Engn, Nanjing 210094, Peoples R China

[2] ZTE Corp, Xian, Peoples R China

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2011年 / 53卷 / 07期

关键词：

substrate-integrated waveguide (SIW); square complementary split-ring resonators (CSRRs); bandpass filter; double-sided parallel strip line (DSPSL);

D O I：

10.1002/mop.26079

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：

A compact planar bandpass filter is presented in this letter, which is implemented by the combination of three different electromagnetic structures, saying, substrate-integrated waveguide (SIW), square complementary split-ring resonators (CSRRs) and dumbbells slot. The resonator is formed by a SIW cavity loaded with some complementary split-ring resonators (CSRRs) on its top metal plane, causing a stopband with a very sharp rejection. Meanwhile, several dumbbells are etched on the bottom plane of SIW just below each CSRR to enhance the coupling. Double-sided parallel strip line (DSPSL) is also used to excite the SIW and guarantee good propagation between these two different structures. An X-band prototype is designed and fabricated for demonstration, good agreement is observed between simulation and measurement, indicating a very wide rejection band ranging from 11 GHz to 23 GHz and quite strong suppression to spurious modes. (C) 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53: 1483-1487, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26079

引用

页码：1483 / 1487

页数：6

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