基于组合型阻抗匹配薄膜环行器的设计  

Design of film circulator based on a combined transformer

作　　者：杨志江[1] 秦会斌[1] 郑梁[1] 郑鹏[1] 汪林[1] 

机构地区：[1]杭州电子科技大学新型电子器件与应用研究所,浙江杭州310018

出　　处：《电子元件与材料》2016年第11期34-37,共4页Electronic Components And Materials

摘　　要：利用阻抗匹配网络转换器对结型薄膜环行器进行阻抗匹配,利用四分之一波长阻抗匹配和渐近线渐变锥型微带线的阻抗组合形式来代替传统的四分之一波长阻抗匹配。HFSS仿真的隔离损耗和回波损耗两个参数的结果显示组合形式的阻抗匹配的环行器性能比传统匹配的环行器的性能好,带宽变得更宽。实测数据(最低点)显示环行器在工作频率为15.5 GHz时,插入损耗(|S_(21)|)为5 d B,隔离度(|S_(21)|)为42 d B,回波损耗(|S_(11)|和|S_(21)|)达到了20 dB。The circulator of the thin-film-junction was matched for combined network transformer, the circulator of the quarter-wave length transformer in the tradition was replaced by the combination of impedance between the quarter-wave length transformer and an gradient tapered microstrip line. HFSS simulation results show that the combined impedance transformer has a better performance in isolation loss and return loss compared to the quarter-wave length transformer in the tradition, especially the bandwidth is wider. The lowest measured insertion loss （｜S21｜） is about 5 dB, the isolation （｜S12｜） is about 42 dB and the return loss （｜Su11｜and ｜S22｜） are 20 dB at 15.5 GHz.

关 键 词：薄膜环行器 四分之一波长转换器 组合阻抗匹配 带宽 HFSS 回波损耗 

分 类 号：TN432[电子电信—微电子学与固体电子学]