含源-负载交叉耦合的准椭圆函数滤波器设计  

Design of Quasi-Elliptic Filter with Source-Load Cross-Coupling

作　　者：朱永忠[1] 谢拥军[1] 倪大宁[1] 

机构地区：[1]西安电子科技大学天线与微波技术国家重点实验室,西安710071

出　　处：《电子与信息学报》2008年第3期604-606,共3页Journal of Electronics & Information Technology

基　　金：教育部新世纪优秀人才支持计划(NCET-04-0950)资助课题

摘　　要：该文首先提出了含源-负载交叉耦合滤波器的等效网络模型,并给出了这种结构的传输函数t(s)以及矩阵的综合方法。由含源-负载交叉耦合二端口网络的短路导纳矩阵推导了耦合矩阵M中MSL、MSi和MiL的一般表达式。最后,设计了一种新颖结构的含源-负载交叉耦合的微带滤波器,对其进行了仿真与制作,实测结果与仿真值、理论值吻合较好。A general method is presented for synthesis of quasi-elliptic filter with source-load coupling＇ The equivalent circuit of the low-pass prototype of a lossless coupled resonator filter is proposed, as well as its transfer function t（s） .The expressions of MSL , MSi and MiL in the coupling matrix M are obtained based on two-port admittance matrix [YN]. Finally, a novel quasi-elliptic two pole microstrip filter composed of two hexagonal open-loop resonators is designed. The numerical results are verified with the simulation, The measured and simulated data are in good agreement.

关 键 词：谐振器滤波器 交叉耦合 准椭圆函数 耦合矩阵 

分 类 号：TN713.5[电子电信—电路与系统]