一种基于“Ⅰ”型DGS的新型幅度均衡器  

A novel amplitude equalizer based on “Ⅰ” type of DGS

作　　者：刘伶 夏雷[1] LIU Ling;XIA Lei(Fundamental Science on EHF Laboratory,University of Electronic Science and Technology of China,Chengdu Sichuan 611731,China)

机构地区：[1]电子科技大学极高频复杂系统国防重点实验室,四川成都611731

出　　处：《太赫兹科学与电子信息学报》2018年第5期875-878,共4页Journal of Terahertz Science and Electronic Information Technology

摘　　要：基于缺陷地结构(DGS)的陷波特性设计了一种新型幅度均衡器。将电阻直接加载在2个"Ⅰ"型微带DGS中,替代了传统幅度均衡器中加载电阻的谐振结构。通过增加微带线线宽抵消了DGS结构带来的特性阻抗变高效应,极大优化了驻波比。该结构具有均衡量和带宽调节方便,超宽带,尺寸小,结构简单,易于加工的特点。三维电磁仿真和实测结果表明,该幅度均衡器可工作在12～40GHz(Ku,K,Ka波段)超宽频带,输入回波损耗优于13.5 dB,最大均衡量优于17 dB,边带插损优于2.1 dB,面积8 mm×8 mm。A novel amplitude equalizer is designed based on the band notch characteristic of Defected Ground Structure(DGS).To replace the resonance associated with resistance in traditional amplitude equalizer,two resistances are put into‘I’type of DGS.By increasing the width of microstrip line,the characteristic impedance variation effect of DGS is eliminated,so does the bad Voltage Standing Wave Ratio(VSWR).This kind of equalizer is characterized by convenient regulating,ultra wideband,small size,simple structure and easy to processing.3D electromagnetic simulation results and testing results have proved that this amplitude equalizer can work at 12-40 GHz(Ku to Ka waveband).The Return loss is less than 13.5 dB.The equilibrium quantity can reach 17 dB.The insertion loss is 2.1 dB at sideband.The size is 8 mm×8 mm.

关 键 词：幅度均衡器 "I"型缺陷地结构 陷波特性 

分 类 号：TN715[电子电信—电路与系统]