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一种共面波导结构双模方形贴片带通滤波器
引用本文:胡慧玲,程崇虎. 一种共面波导结构双模方形贴片带通滤波器[J]. 微波学报, 2007, 23(2): 59-62
作者姓名:胡慧玲  程崇虎
作者单位:南京邮电大学无线通信与电磁兼容实验室,南京,210003
基金项目:国家自然科学基金;教育部跨世纪优秀人才培养计划
摘    要:提出一种新型共面波导(CPW)结构双模方形贴片带通滤波器。该滤波器采用方形贴片作为谐振器,在方形贴片的两个对称的角上开两个相同的方形切角作为微扰使其简并模式分离并产生耦合,贴片与输入/输出CPW分别设计在介质基板的两个不同的面上。文中给出了该滤波器的结构以及通过仿真和实验获得的性能参数,结果表明该滤波器的通带带宽可在4.9%到7.4%的范围内调节,通带内的最小插入损耗为1.85dB。

关 键 词:带通滤波器  共面波导  双模谐振器  方形贴片
文章编号:1005-6122(2007)02-0059-04
收稿时间:2005-10-07
修稿时间:2005-10-072006-01-11

A CPW Bandpass Filter Using a Dual-mode Square Patch Resonator
HU Hui-lin,CHENG Chong-hu. A CPW Bandpass Filter Using a Dual-mode Square Patch Resonator[J]. Journal of Microwaves, 2007, 23(2): 59-62
Authors:HU Hui-lin  CHENG Chong-hu
Affiliation:Lab of Wireless Communication and EMC, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
Abstract:A novel coplanar waveguide(CPW) bandpass filter using a dual-mode square patch resonator is presented in this paper.In the filter,a conventional square patch is used as the resonator,and two small identical square patches cuts at its symmetrical corners are used as perturbation elements to split its degenerate modes and to introduce a coupling between them.The square-patch and the input/output CPW are constructed on the opposite sides of a dielectric substrate,respectively.The configuration and the performance of the filter obtained in both simulation and experiment are presented.Results show that the pass-band of the filter may be adjusted over the bandwidth range from 4.9% to 7.4%,and it has a minimum insertion loss of 1.85 dB in its passband.
Keywords:Band-pass filters  Coplanar waveguide  Dualmode resonators  Square patch
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