星型结多工器综合  

Synthesis of Star-Junction Multiplexers

作　　者：王瑞[1] 李乐中[1] 彭龙[1] 涂小强[1] 钟小溪 

机构地区：[1]成都信息工程大学光电技术学院,成都610225

出　　处：《电子科技大学学报》2017年第4期525-529,共5页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(51502025)

摘　　要：提出了一种利用线性变换综合星型结多工器的方法。该方法基于线性变换综合出多工器的每个信道滤波器S参数对应的特征多项式,利用文献中已有的技术综合出多工器的N阶耦合矩阵。给出了多工器N阶耦合矩阵的构造方法,并推导了多工器S参数和群时延与N阶耦合矩阵的关系。为了验证该方法,给出了一个五工器及一个双工器的综合实例,其中双工器被进一步设计、加工与测试,测试结果与综合结果相吻合,进一步验证了该方法的准确性。This paper presents a method for synthesizing coupled resonator multiplexers with a star-junction （an extra resonant junction in addition to the channel filters）. A linear frequency transformation is proposed for the evaluation of the characteristic polynomials of the each channel filter composed of star-junction multiplexers, and then coupling matrix of overall multiplexers can be obtained by using the proposed linear frequency transformation and well-established method. The evaluation of group delay in the physical frequencyfdomain and S-parameters based on coupling matrix are derived. To illustrate the validation of the method, two examples, including 25-poles multiplexers and 7-poles diplexer, have been synthesized, and the 7-poles diplexer has been further designed, manufactured and measured. The measured resuts are in good agreement with the synthetic results, which further verify the accuracy of the orooosed method.

关 键 词：耦合矩阵 线性频率变换 多工器 星型结 综合 

分 类 号：TN713[电子电信—电路与系统]