Synthesis of Star-Junction Multiplexers
Synthesis of Star-Junction Multiplexers
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DOI：
10.1109/mmm.2011.942011
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发表时间：
2011-09
影响因子：
4.3
通讯作者：
G. Macchiarella
中科院分区：
文献类型：
--
作者：
G. Macchiarella
本文阐述了一种通用的微波多路复用器（RF组合器）的综合方法，提出了一个星结拓扑结构（与谐振结）。组成多路复用器的信道滤波器可以任意指定;特别是，衰减特性可以包括传输零点（虚的和/或复数的）。在低通频域（适当定义）中开发的合成程序基于迭代算法，该算法评估总体复用器和组成滤波器的特征多项式。使用这些后一种多项式，可以使用文献中可用的方法之一来计算滤波器的归一化耦合矩阵，并且通过通常的去归一化参数（耦合系数和外部Q）来进行信道滤波器的尺寸确定。详细的设计步骤，说明了合成的三工器的基站的移动的通信。设计的装置，然后建立，测量和模拟之间的比较验证了新的综合方法。
This paper illustrates a general approach to the synthesis of microwave multiplexers (RF combiners) presenting a star-junction topology (with a resonating junction). The channel filters composing the multiplexer can be arbitrarily specified; in particular, the attenuation characteristic may include transmission zeros (imaginary and/or complex). The synthesis procedure, developed in a low-pass frequency domain (suitably defined), is based on an iterative algorithm which evaluates the characteristic polynomials of both the overall multiplexer and the composing filters. Using these latter polynomials, the normalized coupling matrices of the filters can be computed using one of the methods available in the literature and the dimensioning of the channel filters is carried out through the usual de-normalized parameters (coupling coefficients and external Q). The detailed design steps illustrating the synthesis of a triplexer for base stations of mobile communications are presented. The designed device was then built, and the comparison between measurements and simulations has validated the new synthesis approach.