基于混合左右手和人工传输线的平面双定向耦合器  

Bi-directional coupler based on composite right/left-handed and artificial transmission lines

作　　者：李雨浓[1] 刘长军[1] 

机构地区：[1]四川大学电子信息学院,成都610064

出　　处：《强激光与粒子束》2010年第10期2403-2406,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(60971051)

摘　　要：利用人工传输线作为右手传输线,与混合左右手传输线（CRLH-TL）进行耦合,实现左手传输线和右手传输线的混合耦合,构造了一种新型的定向耦合器。该耦合器具有后向耦合、小型化、结构紧凑的特点。实验测试结果表明：耦合器的工作频率在1.3~1.8 GHz,相对百分比带宽达到32%,实现了10 dB的耦合度,比常规微带线定向耦合器具有更大的耦合度调节范围,隔离度大于25 dB。实验测试结果与电磁仿真结果相吻合。An artificial transmission line as a right-handed transmission line is edge-coupled with a CRLH-TL to realize coupling between the left-handed and the right-handed transmission line.The directional coupler is a compact planar structure with characteristics of backward and tight coupling.Experimental results show that a 10 dB coupling coefficient is achieved from 1.3 GHz to 1.8 GHz.The corresponding fractional bandwidth is about 32%,and the isolation is greater than 25 dB.Simulation results agree well with measured results.The directional coupler covers a wider coefficient range than the conventional one.

关 键 词：混合左右手传输线 人工传输线 定向耦合器 微带线 

分 类 号：TN62[电子电信—电路与系统]