Advanced coupling matrix synthesis techniques for microwave filters
Advanced coupling matrix synthesis techniques for microwave filters
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DOI：
10.1109/tmtt.2002.806937
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发表时间：
2003-01
影响因子：
4.3
通讯作者：
R. Cameron
中科院分区：
文献类型：
--
作者：
R. Cameron
本文提出了一种综合切比雪夫或其他最一般类型的滤波函数的折叠组态耦合矩阵的一般方法，包括完全正则的情况，即，N度网络中的N个规定的有限位置传输零点。该方法是基于“N+2”横向网络耦合矩阵，这是能够容纳多个输入/输出耦合，以及所需的完全规范的情况下，直接源-负载耦合。本文首先介绍了建立横向网络耦合矩阵的直接法。一个简单的非优化过程，然后概述了转换的横向矩阵等效的“N+2”折叠配置耦合矩阵。折叠矩阵可以直接用于实现各种技术中的微波带通滤波器，但其中一些可能需要笨拙地实现交叉耦合。本文最后描述了两个简单的程序转换成两个新的网络配置的横向和折叠矩阵，使先进的微波带通滤波器的实现，而不需要复杂的谐振器间耦合元件。
A general method is presented for the synthesis of the folded-configuration coupling matrix for Chebyshev or other filtering functions of the most general kind, including the fully canonical case, i.e., N prescribed finite-position transmission zeros in an Nth-degree network. The method is based on the "N+2" transversal network coupling matrix, which is able to accommodate multiple input/output couplings, as well as the direct source-load coupling needed for the fully canonical cases. Firstly, the direct method for building up the coupling matrix for the transversal network is described. A simple non-optimization process is then outlined for the conversion of the transversal matrix to the equivalent "N+2" folded-configuration coupling matrix. The folded matrix may be used directly to realize microwave bandpass filters in a variety of technologies, but some of these could require awkward-to-realize cross-couplings. This paper concludes with a description of two simple procedures for transforming the transversal and folded matrices into two novel network configurations, which enable the realization of advanced microwave bandpass filters without the need for complex inter-resonator coupling elements.