新型缺陷地结构定向耦合器的耦合度研究

摘要

分析了缺陷地结构（DGS）的基本理论及其等效模型，提出了一种新型的缺陷地结构微带线定向耦合器的设计方法，同时分析了该缺陷地结构对耦合器耦合度的影响。仿真和实验结果表明，该缺陷地结构能很好的增强耦合器的耦合_度。%The basic theory and equivalent model of defect ground structure （DGS） are analyzed. A microstrip line directional coupler with new type of defect ground structure is proposed, and the influence on the coupling from the coupler with defect ground structure is analyzed. Simulation and experimental results show that the defect ground structure can enhance the coupling of the coupler.