一种基于耦合矩阵综合法的交叉耦合腔体滤波器设计  

Design of Cross-Coupled Cavity Filter Based on Coupling Matrix Synthesis Method

作　　者：李进 杨维明 揭智航 杨武韬 LI Jin;YANG Weiming;JIE Zhihang;YANG Wutao(Faculty of Computer Science and Information Engineering,Hubei University,Wuhan Hubei 430062,China;Wuhan Binhu Electronics Co.,Ltd.,Wuhan Hubei 430205,China)

机构地区：[1]湖北大学计算机与信息工程学院,湖北武汉430062 [2]武汉滨湖电子有限责任公司,湖北武汉430205

出　　处：《电子器件》2024年第4期975-980,共6页Chinese Journal of Electron Devices

基　　金：2018年国家“新工科”研究与实践项目(教高厅函[2018]17号)。

摘　　要：通过使用多项式法和电路法共同构造短路导纳矩阵的方式综合出滤波器的N+2耦合矩阵,并以一个四阶交叉耦合的腔体滤波器为例,利用ADS中的电路仿真验证了耦合矩阵综合的正确性。然后在HFSS中建立滤波器的全波仿真模型,通过曲线拟合的方法对其进行优化,有效地缩短了调试时间,提高了设计效率。从实测结果来看,该滤波器在通带内(1 371 MHz~1 413 MHz)插入损耗小于0.1 dB,驻波比小于1.725,基本可以满足性能指标要求。The N+2 coupling matrix of the filter is synthesized by constructing the short-circuit admittance matrix through the polynomial method and the circuit method.A fourth order cross-coupled cavity filter is taken as an example,and the circuit simulation in ADS is used to verify the correctness of the coupling matrix synthesis.Then,the full-wave simulation model of the filter is established in HFSS,and the curve fitting method is used to optimize it,which greatly reduces the debugging time and improves the design efficiency.According to the measured results,the insertion loss of the filter in the passband(1 371 MHz-1 413 MHz)is less than 0.1 dB,and the standing wave ratio is less than 1.725,which can basically meet the requirements of the performance index.

关 键 词：导纳矩阵 耦合矩阵 交叉耦合 腔体滤波器 

分 类 号：TM713[电气工程—电力系统及自动化]