基于多扇形枝节结构的多频段微带滤波器  

Multi-band Microstrip Filter Based on Multi-fan-shaped Stubs Structure

作　　者：职佳文 浦实 许泊炎 陈思明 林树东 ZHI Jiawen;PU Shi;XU Boyan;CHEN Siming;LIN Shudong(School of physical science and technology, Wuhan University of Technology, Wuhan 430070, China;School of Automation,Wuhan University of Technology, Wuhan 430070, China)

机构地区：[1]武汉理工大学理学院物理科学与技术系,湖北武汉430070 [2]武汉理工大学自动化学院自动化系,湖北武汉430070

出　　处：《探测与控制学报》2020年第5期92-96,共5页Journal of Detection & Control

基　　金：国家自然科学基金项目资助(51577138);湖北省自然科学基金项目资助(2014CFB873);中央高校基本科研业务费专项资金资助(191214001);国家级大学生创新创业训练计划资助(20191049714002)。

摘　　要：针对无线能量传输系统在整流过程中采用二极管等非线性元器件容易引发高次谐波的问题,设计了基于多扇形枝节结构的多频段微带滤波器。该滤波器采用微带传输线和扇形微带枝节结构组合成等效LC滤波电路,通过三个不同尺寸的扇面对2.4 GHz、4.8 GHz和7.2 GHz频率的谐波进行抑制。采用ADS软件对滤波电路进行仿真和优化,在此基础上对其进行了加工与测试,测试结果表明,滤波器在这三个频点的|S21|值均达到-40 dB以下。Aiming at the problem of the higher harmonics caused by the non-linear components such as diodes in the rectification procedure of wireless power transmission systems,a multi-band microstrip filter based on multi-fan-shaped stubs structure was designed.The filter adopted a microstrip transmission line and a fan-shaped microstrip branch structure to form an equivalent LC filter circuit.Three fans with different sizes were acted on filtering the harmonics of 2.4 GHz,4.8 GHz and 7.2 GHz frequencies.The ADS software was used to simulate and optimize the filter size.On this basis,the designed filter was fabricated and tested.The measurement results showed that all the values of|S21|reached below-40 dB at the above three frequencies.

关 键 词：微带电路 扇形枝节 谐波抑制 无线能量传输 

分 类 号：TN713[电子电信—电路与系统]