基于奇偶模分析法的微波带状线定向耦合器设计  

Design of Strip-Line Directional Coupler Based on the Odd-Even Mode Analytical Method

作　　者：蔡德龙[1] 刘成安[1] 蔡钟斌[1] 吕涛[1] 

机构地区：[1]西南科技大学国防科技学院,四川绵阳621010

出　　处：《测控技术》2017年第2期145-148,共4页Measurement & Control Technology

基　　金：国防科技工业技术基础科研项目(JSHS2014404B002);国家科技支撑计划项目(2013BAH32F00)

摘　　要：基于奇偶模分析法分析了从一节至多节的耦合器设计公式,并以此设计了1~2 GHz的多节交错级联3 dB带状线定向耦合器。采用HFSS对所建立的耦合器模型进行了仿真。仿真结果表明,该带状线耦合器在通带内的传输损耗、反射系数、输出隔离度均在一20 dB以下,直通耦合平坦度在±0.4 dB以内,输入输出驻波比小于1.2。该方法为同类宽带强耦合度的耦合器的研究提供了一定的参考价值。The design formulas of coupler from one section to multi-section are analyzed based on the odd-even mode analysis method,and the multiple sections coupling and staggered cascade 3dB stripline directional coupler applied to the spectrum for 1 to 2 GHz is designed.The established coupler＇s model is simulated by HFSS.The simulation results show that the transmission loss,reflection coefficient and output isolation of strip-line coupler are all below-20 dB,the direct coupling flatness is within±0.4 dB,and the input and output standing wave ratio are less than 1.2.This method provides a certain reference value for the research of this kind of strong coupling and broadband coupler.

关 键 词：奇偶模 带状线 定向耦合器 宽带 电磁仿真 

分 类 号：TN622[电子电信—电路与系统]