基于单个三模枝节加载谐振器的紧凑型单刀双掷开关设计  

Compact Single-Pole Double-Throw Switch Using Single Stub-Loaded Tri-Mode Resonator

作　　者：蔡其航 顾村锋 万浩 计淞耀 靳子凡 段宇文 许进 CAI Qihang;GU Cunfeng;WAN Hao;JI Songyao;JIN Zifan;DUAN Yuwen;XU Jin(School of Electronics and Information,Northwestern Polytechnical University,Xi’an 710072,Shaanxi,China;Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109,China)

机构地区：[1]西北工业大学电子信息学院,陕西西安710072 [2]上海机电工程研究所,上海201109

出　　处：《空天防御》2023年第3期119-124,共6页Air & Space Defense

基　　金：陕西省自然科学基础研究计划项目(2021JM-070);“同芯计划”高校专项科研计划项目(BM202100347);上海航天科技创新基金资助项目(SAST2019-009)。

摘　　要：为了减小滤波开关(FIS)的尺寸,基于单个三模枝节加载谐振器设计出了一种紧凑型的单刀双掷滤波开关(SPDT)。与传统的滤波开关相比,SPDT利用单个三模谐振器(TMR)在不同PIN管开关状态下呈现不同谐振模式与耦合路径的特点,成功地将单刀双掷滤波开关采用的谐振器数量减半,从而减小了滤波开关的尺寸。在此基础上,在输出馈电线末端引入开关二极管从而提高滤波开关关断时的隔离度。SPDT导通状态插入损耗为2.4 dB,中心频率为975 MHz,3 dB带宽为250 MHz,公共端口回波损耗优于20 dB,导通端口回波损耗优于15 dB,带内关断隔离度优于23 dB。To reduce the size of the filter integrated switch(FIS),a compact single-pole-double-throw(SPDT)filtering switch based on a tri-mode resonator was proposed in this paper.Compared with the conventional FIS,this design could reduce the number of the multi-mode resonator in the SPDT filtering switch by adopting different resonator modes and coupling paths in one single resonator with a PIN diode,which would greatly decrease the size of the FISSPDT filtering switch.In addition,a PIN diode was introduced at the end of the feeding line to increase the off-state isolation of the SPDT filtering switch.Results show that the centre frequency of the on-state switch is 975 MHz and the 3dB bandwidth is 250 MHz.The on-state insertion loss was better than 2.4dB and the common port return loss is better than 20 dB.The on-state port return loss is better than 15dB and the off-state suppression is better than 23 dB.

关 键 词：三模谐振器 PIN二极管 滤波开关(FIS) 单刀双掷开关 

分 类 号：TM564[电气工程—电器]