含有频变耦合系数的交叉耦合滤波器优化设计  

Optimization Synthesis Technique for Cross-Coupled Filter with Frequency Dependent Couplings

作　　者：张永亮[1,2,3] 苏涛 吴边[4] 周润景[3] ZHANG Yong-liang;SU Tao;WU Bian;ZHOU Run-jing(College of Transportation,Inner Mongolia University Hohhot 010070 2.Post-Doctoral Research Station of College of Physical Science and Technology,Inner Mongolia University Hohhot 3.Science and Technology on Antenna and Microwave Laboratory,Xidian University Xi＇an 710071 4.College of Electronic Information Engineering,Inner Mongolia University Hohhot 010021)

机构地区：[1]内蒙古大学交通学院,呼和浩特010070 [2]内蒙古大学物理学博士后流动站,呼和浩特010021 [3]内蒙古大学电子信息工程学院,呼和浩特010021 [4]西安电子科技大学天线与微波重点实验室,西安710071

出　　处：《电子科技大学学报》2018年第4期516-520,共5页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(61761032;61271017;61161001)

摘　　要：交叉耦合滤波器由于其小体积和高性能等优点被广泛应用于各种微波系统中。但阶数固定的交叉耦合滤波器能够实现有限传输零点的个数受限。针对该问题,给出一种含有频变耦合系数的交叉耦合滤波器快速优化综合技术。含有频变耦合系数的交叉耦合滤波器在阶数相同的情况下能够实现更多的有限传输零点。首先利用全局优化算法遗传算法进行初步搜索,若满足指标则停止;否则将其结果作为局部优化算法Solvopt的初值进行搜索即可获得指定拓扑结构的耦合矩阵。通过3个优化综合实例证明了该方法的有效性。Cross-coupled filters with small volume and the high performance are applied widely in various microwave systems. However, the number of finite transmission zeros for cross-coupled filters is limited. However, a cross-coupled filter with frequency dependent couplings can realize more finite transmission zeros than the traditional cross-coupled filters when the filter order is the same. A novel fast filter synthesis technique with frequency dependent couplings is presented in this paper. The global optimization algorithm Genetic Algorithm（GA） searches the optimal solution. If the solution meets the requirement, stop the optimization. Otherwise, the solution of GA as the initial value for Solvopt optimization to search the optimal solution. Three numerical examples show the validity of the synthesis technique in this paper.

关 键 词：交叉耦合 滤波器 频变耦合 综合 

分 类 号：TN713[电子电信—电路与系统]