1/4波长同轴型微波介质滤波器的设计与仿真  

The design of 1/4 λ coaxial microwave dielectric and its simulation filter

作　　者：梁飞[1] 吕文中[1] 汪小红[1] 周东祥[1] 

机构地区：[1]华中科技大学电子科学和技术系,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2004年第4期93-95,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目 (6 0 0 0 10 0 2 ) ;国家高技术研究发展计划资助项目 ;湖北省科技攻关资助项目

摘　　要：采用HFSS软件对 1/ 4波长同轴型微波介质滤波器进行模拟仿真 ,在此基础上详细讨论谐振器间耦合系数K ,频率漂移系数 η以及外界品质因数Qe 随端口电极宽度a ,耦合孔直径D的变换规律 .A bandpass filter was constructed by using λ/4 -coaxial resonators. The resonators were made of metallized high- ε r and microwave dielectric ceramics. They were directly coupled each other by coupling apertures between the resonators. In order to couple the input and output resonators to the external circuit,a rectangular metal film was formed near the resonators open-circuit end. The structure of filter was designed by HFSS software to discuss the relation among the factors such as end electrode width w and coupling apertures diameter D and properties such as the resonate frequency f l,coupling coefficients K between resonators and external Q e at both end electrodes. According to the discussion,the required dielectric filter can be designed and fabricated.

关 键 词：微波介质滤波器 品质因数 耦合系数 频率漂移系数 

分 类 号：TN612[电子电信—电路与系统]