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
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
收藏
页码:17 / 22
页数:6
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