Compact Dual-Band Bandpass Filter Using Stubs Loaded Ring Resonator

被引：2

作者：

Xu, Jin ^{[1
,2
,3
]}

机构：

[1] Northwestern Polytech Univ, Sch Elect & Informat, Xian 710072, Peoples R China

[2] Nanjing Univ Sci & Technol, Ministerial Key Lab JGMT, Nanjing 210094, Jiangsu, Peoples R China

[3] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China

来源：

FREQUENZ | 2016年 / 70卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

bandpass filter (BPF); dual-band; ring resonator; stub loaded resonator;

D O I：

10.1515/freq-2015-0109

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 a novel second-order dualband bandpass filter (BPF) by using proposed stubs loaded ring resonator. The resonant behavior of proposed stubs loaded ring resonator is analyzed by even-/odd-mode method, which shows its multiple-mode resonant characteristic. Parameters sweep is done so as to give the design guidelines. As an example, a second-order dual-band BPF operating at 1.8/5.2 GHz for GSM and WLAN applications is designed, fabricated and measured. The fabricated filter has a very compact size of 0.05Ag x 0.15Ag. Measured results also show that the proposed dual- band BPF has a better than 20 dB rejection upper stopband from 5.47 GHz to 12.56 GHz. Good agreement is shown between the simulated and measured results.

引用

页码：17 / 22

页数：6

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