一种宽带小型化双定向耦合器设计  

Design of Broadband Miniaturized Dual Directional Coupler

作　　者：王杨 郭庆功[1] 徐军剑 WANG Yang;GUO Qing-gong;XU Jun-jian(School of Electronics and Information Engineering,Sichuan University,Chengdu Sichuan 610065,China;The Military Representative Office in Liaoyang Area,Military Bureau of Army in Shenyang,Liaoyang Liaoning 111000,China;Department of Fire Control,Military Representative Bureau of Army in Chongqing,Chongqing 400060,China)

机构地区：[1]四川大学电子信息学院,四川成都610065 [2]陆军沈阳军代局驻辽阳地区军代室,辽宁辽阳111000 [3]陆军重庆军代局火控处,重庆400060

出　　处：《通信技术》2018年第3期712-717,共6页Communications Technology

摘　　要：利用奇偶模分析和端口网络分析,提出了一种弱耦合强度定向耦合器的宽带、小型化设计方法。采用耦合微带线结构加载均衡网络的设计方式,设计了一种工作在30~512 MHz频率范围,可承受200 W连续波功率,耦合度为50 dB,不平坦度≤±0.5 dB,驻波比≤1.2:1,插损≤0.1 dB的宽带小型化双定向耦合器,尺寸远远小于1/4波长。同时,提出了一种能够有效改善方向性的设计方法,使其方向性不小于20 dB。经仿真、优化和加工、测试,验证了该设计符合设计要求。Based on analysis of the odd-even mode and ports network,a broadband and miniaturization design of weak-coupling directional coupler is proposed.A kind of miniaturized dual-directional coupler which can withstand200W continuous wave powers is designed.Based on the coupled micro-strip line structure load equilibrium network design method,this design could make its size far less than a quarter wavelength,while its operating frequency is30-512MHz,the coupling degree50dB,the coupled flatness is not greater than±0.5dB,the VSWR not greater than1.2,and the insertion loss not greater than0.1dB.Meanwhile,a design method that can effectively improve the directivity is proposed,thus to make its directivity not less than20dB.Simulation,optimization,processing and testing indicate that the proposed design could satisfy the expected requirements.

关 键 词：小型化 双定向耦合器 微带线 奇偶模阻抗 

分 类 号：TN73[电子电信—电路与系统]