Compact Filter Configurations Using Concentric Microstrip Open-Loop Resonators

被引：27

作者：

Athukorala, L. ^{[1
]}

Budimir, D. ^{[1
]}

机构：

[1] Univ Westminster, Wireless Commun Res Grp, London W1W 6UW, England

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2012年 / 22卷 / 05期

关键词：

Bandpass filter (BPF); compact filter; concentric filter; dual-mode filter; microstrip filter;

D O I：

10.1109/LMWC.2012.2190268

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 paper presents two highly compact filter configurations using concentric open-loop resonators. A description of each filter configuration is presented, where a linkage between structural features and coupling coefficients is outlined. A third order trisection and a fourth order source-load coupled filter were designed and fabricated at 1.0 GHz, and each filter was shown to occupy an area of just 18 by 18 mm. The measured insertion loss of the third and fourth order filters was 0.83 and 1.20 dB, respectively. Moreover, these structures may also be cascaded to produce higher order compact filters.

引用

页码：245 / 247

页数：3

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