基于单端口群时延优化的高温超导滤波器和四工器设计

基于单端口群时延优化的高温超导滤波器和四工器设计

内容简介：本文介绍了以单端口群时延作为目标的空间映射优化法，并用该方法设计了一个8阶滤波器和一个高温超导四工器．该阶滤波器中心频率为3000MHz ，带宽为40MHz ．而四工器的四个工作频段分别为3640MHz～3740MHz、3780MHz～3820MHz、3880MHz～3930MHz、3970MHz～4030MHz ．仿真结果表明用此方法设计得到的滤波器和四工器在通带内回波损耗均可达到-22dB以下，纹波系数小于0.1dB ，且四工器各通道间隔离度大于40dB ．另外，仿真结果和理论计算得到的 S参数曲线基本一致．上述结果验证了基于单端口群时延的空间映射法是一种高效准确的微波电路仿真设计方法．

Abstract：A space mapping optimization method based on the group delay of the reflection coefficient is introduced .A high temperature superconducting (HTS) 8-pole filter and a quadruplexer are designed using the proposed method .The resultant filter has a center frequency of 3000MHz and a band width of 40 MHz .And the four channels of the quadruplexer are 3640MHz~3740MHz , 3780MHz~3820MHz ,3880MHz~3930MHz and 3970MHz~4030MHz ,respectively .The simulation results of the filter and the quadruplexer show that the return loss is higher than 22dB in the passband and the ripple coefficient is less than 0.1dB .In addition , the isolation of the four channels of the quadruplexer is more than 40dB .It is shown that the simulation results is consistent with the theoretical results ,which verifies that the group delay of the reflection coefficient based on space mapping method is an efficient and accurate approach to design HTS filters and multiplexers .

作者：葛德永, 张旭, 何明, 赵新杰, 胡磊, 季鲁, 阎少林,

关键词：单端口群时延, 空间映射法, 滤波器, 四工器