电波科学学报2016，Vol.31Issue(6)：1046-1052,7.DOI:10.13443/j.cjors.2016092301
基于环形谐振器的平衡式带通滤波器
Balanced bandpass filter using ring resonator
摘要
Abstract
A balanced bandpass filter (BPF) using multi-mode ring resonator is proposed,which is configured by two pairs of balanced ports and a ring resonator with loaded resistors and shorted stubs.The proposed filter can get dual-mode differential-mode response with single resonator,and it has the advantages of simple structure,high common-mode suppression and finite controllability of bandwidth (4％-9％).A prototype at 1.87 GHz is designed on RO4003C substrate to verify the theoretical prediction.Measured results show that the 20-dB impedance matching bandwidth is 8.9％,the insertion loss at the center frequency is 0.86 dB and the common-mode suppression is greater than 30 dB from 1 GHz to 3 GHz.关键词
环形谐振器/平衡式带通滤波器/电阻加载/短路枝节加载/共模抑制Key words
ring resonator/balanced bandpass filter/resistor loaded/loaded shorted stub/common-mode suppression分类
信息技术与安全科学引用本文复制引用
张诚,施金,杜明珠,林垄龙,徐凯..基于环形谐振器的平衡式带通滤波器[J].电波科学学报,2016,31(6):1046-1052,7.基金项目
国家自然科学基金(61471209) （61471209）
江苏省研究生科研创新项目(KYLX16_0970) （KYLX16_0970）
江苏省六大人才高峰(2013-XXRJ-010) （2013-XXRJ-010）
