频变交叉耦合带通滤波器的耦合矩阵综合研究  

Coupling matrix synthesis for cross-coupling bandpass filters with frequency-dependent coupling

作　　者：方芝清 吕立明[1] 曾荣[1] 李智鹏[1] 唐高弟[1] FANG Zhiqing;LYU Liming;ZENG Rong;LI Zhipeng;TANG Gaodi(Institute of Electronic Engineering,China Academy of Engineering Physics,Mianyang Sichuan 621999,China)

机构地区：[1]中国工程物理研究院电子工程研究所

出　　处：《太赫兹科学与电子信息学报》2019年第5期854-860,共7页Journal of Terahertz Science and Electronic Information Technology

摘　　要：综合代表滤波器拓扑结构和特性的耦合矩阵是交叉耦合滤波器设计的重点。提出了一种基于广义特征值的优化综合方法,通过非线性最小二次求解,将耦合矩阵的广义特征值逼近至广义切比雪夫响应多项式传输函数零极值参考点,优化求解出带有频变交叉耦合带通滤波器的耦合矩阵。通过3个数值实例演示了该方法,并验证其有效性。这是对经典带通滤波器耦合矩阵综合方法的补充,为频变交叉耦合滤波器的设计建立了基础。The coupling matrix synthesis which represents the topology and characteristics of the filter,is the focus of the cross-coupling filter design. In this paper, a generalized eigenvalue-based optimization synthesis method is proposed. Through the nonlinear least-squares solution, the generalized eigenvalues of the coupling matrix are approximated to reference point of the zeros of the polynomial of the generalized Chebyshev response transfer function, and the optimal solution of the coupling matrix is obtained. This is a supplement to the classical bandpass filter coupling matrix synthesis method, and establishes the basis for the design of the frequency-dependent cross-coupling filters.

关 键 词：频变耦合系数 耦合矩阵综合 交叉耦合 广义切比雪夫滤波器 带通滤波器 

分 类 号：TN713.5[电子电信—电路与系统]