广义切比雪夫滤波器有限传输零点提取和交叉耦合结构分析  

Extraction of Finite Transmission Zeros and Cross-Coupled Structure Analysis of General Chebyshev Filters

作　　者：刘建厂 

机构地区：[1]海司信息化部,北京100841

出　　处：《舰船电子工程》2015年第9期59-62,118,共5页Ship Electronic Engineering

摘　　要：与传统滤波器相比,引入有限传输零点的交叉耦合广义切比雪夫滤波器具有更好的带外特性。传输零点的确定和提取是完成滤波器综合的前提,根据确定的传输零点可以进行反射和传输多项式的综合,进一步可以得到交叉耦合矩阵。耦合矩阵中含有滤波器元件的一些真实特性,对所得耦合矩阵进行相似变化,去掉不易实现的耦合,在保证滤波器性能不受影响的前提下,得到需要的拓扑结构。在确定传输零点时,使用了一种新的优化提取方法,并验证了方法的有效性。Compared with the traditional filter ,the introduction of finite transmission zeros of the cross‐coupled general Chebyshev filter has better characteristics out of band‐pass .The determination and extraction of transmission zeros is the precondition for the synthesis of the filter .According to the transmission zero point ,the reflection and transmission polyno‐mials can be integrated and the cross‐coupled matrix can be obtained .The coupled matrix contains some real features of filter elements ,The coupled matrix is changed and the coupling difficult to achieve is removed easily .The topological structure is obtained without the influence of the filter performance .A novel optimization method is used to determine the transmission zeros ,and the validity of the method is verified .

关 键 词：广义切比雪夫滤波器 传输零点 交叉耦合 优化方法 拓扑结构 

分 类 号：TN713[电子电信—电路与系统]