一种可运用于THz波段的新型定向耦合器  

A Novel Waveguide Directional Coupler at THz Band

作　　者：黄昆[1,2] 钟伟[1,2] 康小克[1,2] 邓贤进[1,2] 何月[1,2] 

机构地区：[1]中国工程物理研究院电子工程研究所,绵阳621999 [2]微系统与太赫兹中心,绵阳621999

出　　处：《微波学报》2015年第3期90-92,96,共4页Journal of Microwaves

基　　金：国家重点基础研究发展计划("973"计划)(2015CB755406)

摘　　要：根据分支波导定向耦合器的工作原理,并结合考虑MEMS刻蚀工艺,设计出一款应用于THz波段的10d B波导定向耦合器。该定向耦合器在传统的分支线结构上加以改进,将传统分支线耦合结构改进成新型"田"字型耦合结构,性能较好,并提高了可加工性。通过HFSS软件仿真,该定向耦合器在0.33~0.35THz频段内耦合度为10d B,隔离度达到30d B以上,各端口回波损耗小于-30d B,整体插损小于0.2d B。According to the branch waveguide directional coupler theory and the etching process of MEMS,a novel type of THz-band waveguide 10 d B directional coupler is designed. The classical branch waveguide directional coupler is transformed into the novel waveguide directional coupler of '田'-shape bridge,achieved the better performance and improved the feasibility of the micro-fabrication process. Through 3D simulation software HFSS simulation demonstrates the waveguide directional coupler have the isolation better than 30 d B,the return loss better than 30 d B and the insertion loss less than 0. 2d B in 0. 33 ~ 0. 35 THz.

关 键 词：太赫兹技术 波导定向耦合器 “田”字型电桥 MEMS工艺 

分 类 号：TN622[电子电信—电路与系统]