小型化新型宽频带环形电桥  

New Compact Enhanced-Bandwidth Hybrid Ring

作　　者：张鹏飞[1] 龚书喜[1] 

机构地区：[1]西安电子科技大学天线与微波技术重点实验室,陕西西安710071

出　　处：《西安电子科技大学学报》2006年第4期593-597,共5页Journal of Xidian University

基　　金：国家部委重大预研资助项目(10.2.1.4)

摘　　要：采用人工合成左/右手传输线结构,设计了两种新型的小型宽频带环形电桥.通过在电桥中用±90°枝节代替290°枝节,使环形电桥的电路面积减小了75%,工作于2 GHz的第1种环形电桥的同相输出带宽增加了50%,180°反相输出带宽增加了49%.通过在电桥中引入0°枝节,使第2种电桥可以对具有0°,90°,180°和270°相差的两个信号进行同相或反相混合,同相输出带宽增加了38%.Two new compact enhanced-bandwidth hybrid rings using composite right/left-handed transmission lines are designed. The replacement of the 270° branch by ±90° ones results in at least 75° reduction in size of the hybrid ring compared with the conventional one. At the same time, the bandwidths of the first hybrid ring operating at 2GHz are enhanced by 50~ in the in-phase operation, and 49°in the 180°-out-of-phase operation. The introduction of the 0° transmission line branches makes it possible that the second new hybrid ring be used as a mixer of two signals with -90°, 0°, 90° or 180° phase difference. The bandwidth is enhanced by 38% in the in-phase operation.

关 键 词：环形电桥 左手媒质 人工合成左/右手传输线 

分 类 号：O441.44[理学—电磁学]