宽带微带正交耦合器设计  

Broadband microstrip quadrature coupler design

作　　者：高凯 孙如英 韩荣苍 Gao Kai;Sun Ruying;Han Rongcang(School of Physics and Electronic Engineering,Linyi University,Linyi 276000,China)

机构地区：[1]临沂大学物理与电子工程学院,山东临沂276000

出　　处：《无线互联科技》2018年第7期68-69,共2页Wireless Internet Technology

基　　金：临沂大学大学生创新项目;项目编号:201710452075

摘　　要：文章设计了一款微带线型宽频带微带正交耦合器。该正交耦合器由一个威尔金森功率分配器和一个宽带移相器级联组成。数值仿真结果表明该正交耦合器具有良好的宽带特性,它在50%以上的频带(S11≤–15 d B)上具有良好的阻抗匹配、功率分配(-3 d B)和90°移相(相位偏差为3°)功能。所以该正交耦合器必在宽带圆极化天线方面具有广泛的应用前景。A broadband quadrature coupler designed with microstrip line is designed in this paper.The broadband quadrature coupler is basically carried out with the Wilkinson power divider cascading a broadband microstrip shifter.The numerical simulation results show that the quadrature coupler has good wideband characteristics.It has good impedance matching on more than 50%frequency band(S11≤-15 dB),(power distribution of 3 dB)and 90°phase shift(phase deviation of 3°).Therefore,the proposed couler is promising for the circularly-polarized antenna applications.

关 键 词：正交耦合器 宽带移相器 威尔金森功率分配器 

分 类 号：TN622[电子电信—电路与系统]