基于缺陷地结构的小型宽带天线设计  

Design of Compact Wideband Antenna Based on Defected Ground Structure

作　　者：侯凯 胡延文 严仲明[1] 周洪澄 王豫[1] HOU Kai;HU Yanwen;YAN Zhongming;ZHOU Hongcheng;WANG Yu(School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China)

机构地区：[1]西南交通大学电气工程学院,四川成都611756

出　　处：《压电与声光》2021年第1期54-58,共5页Piezoelectrics & Acoustooptics

基　　金：中央高校基本科研业务费专项基金资助项目(2682020GF03)。

摘　　要：该文介绍了一种使用缺陷地结构的小型化超宽带天线,其尺寸为29 mm×31.5 mm×1.6 mm,该天线采用正六边形金属贴片作为天线辐射贴片。通过在介质板上引入开口谐振环,产生了新的工作谐振频段,并进一步拓宽了天线的工作频段。通过在辐射贴片上加载“十字形”分支结构,使电流路径改变,从而改善天线的宽带辐射特性。测试结果表明,该天线反射系数<-10 dB的频段为3.0~19.3 GHz。A miniaturized ultra-wideband antenna with defected ground structure is presented in this paper.The size of antenna is 29 mm×31.5 mm×1.6 mm.A regular hexagonal metal patch is used as the antenna radiation patch.A new operating resonant frequency band is generated by loading two split resonance rings on the dielectric plate,which further widens the operating frequency bandwidth of the antenna.The current path of the antenna is changed by loading a cross-shaped branch,thereby improving the ultra-wideband characteristic of the antenna.The test results show that the reflection coefficient of the antenna is less than-10 dB at the frequency range of 3.0~19.3 GHz.

关 键 词：超宽带天线 小型化天线 开口环 

分 类 号：TN384[电子电信—物理电子学]