一种紧凑型超宽带UHF天线设计  

Design of a Compact Ultra-Wideband UHF Antenna

作　　者：秦艺菲 王豫[1] 严仲明[1] 周洪澄 QIN Yifei;WANG Yu;YAN Zhongming;ZHOU Hongcheng(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2期192-196,共5页Piezoelectrics & Acoustooptics

基　　金：中央高校基本科研业务费基金资助项目(2682019CX22)。

摘　　要：提出了一种尺寸紧凑的超宽带特高频(UHF)天线,该天线由微带单极子天线和寄生层组成。通过将单极子天线的矩形辐射贴片与圆环贴片结合、加载寄生贴片,以及对接地板进行开槽和切角,有效拓展了天线的带宽,并使其获得了超宽带特性。将印刷有双箭头金属图案阵列的寄生层放置在单极子天线下方可提高天线的增益,且阻抗带宽保持不变。该天线的整体尺寸为120 mm×150 mm×11.2 mm,反射系数S11<-10 dB的频率为0.64~7.00 GHz,最大增益为7.57 dBi,具有良好的全向辐射特性。对天线进行了加工与测试,测试结果与仿真结果基本一致,证明了仿真结果的有效性。A compact ultra-wideband ultra-high frequency(UHF)antenna is proposed in this paper.The antenna is composed of a microstrip monopole antenna and a parasitic layer.By combing the rectangular radiation patch with a ring patch,loading a parasitic patch,slotting and truncating corners of the ground plane,the bandwidth of the monopole antenna is effectively enhanced,and the ultra-wideband characteristic is obtained.The gain of the antenna has been improved and the impedance bandwidth remains unchanged by placing the parasitic layer with the double arrow metal pattern array under the monopole antenna.The overall antenna size is 120 mm×150 mm×11.2 mm,the frequency range with the reflection coefficient S11 of less than-10 dB is from 0.64 GHz to 7.00 GHz,the maximum gain is 7.57 dBi,and it has good omnidirectional radiation characteristic.The proposed antenna has been fabricated and tested,and the result is basically consistent with the simulated results,which proves the validity of the simulation result.

关 键 词：宽频带 特高频(UHF) 单极子天线 增益 全向 

分 类 号：TN82[电子电信—信息与通信工程]