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.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
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)
关键词
耦合矩阵
线性频率变换
多工器
星型结
综合
coupling matrix
linear frequency transformation
multiplexers
star-junction
synthesis
