超宽带小型化Vivaldi天线  

Ultra Wideband Miniaturized Vivaldi Antenna

作　　者：王言言 郑理想 王宇 姬五胜[1] WANG Yanyan;ZHENG Lixiang;WANG Yu;JI Wusheng(School of Electronic Engineering,Tianjin University of Technology and Education,Tianjin 300350,China;Comba Telecom Technology(Guangzhou)Ltd.,Guangzhou 510655,China;Guangzhou Institute,Xidian University,Guangzhou 510655,China)

机构地区：[1]天津职业技术师范大学电子工程学院,天津300350 [2]京信通信技术(广州)有限公司,广州510655 [3]西安电子科技大学广州研究院,广州510655

出　　处：《电子信息对抗技术》2025年第1期95-100,共6页Electronic Information Warfare Technology

基　　金：2022天津市企业科技特派员项目(22YDTPJC00330);2020天津市重点研发计划科技支撑重点项目(20YFZCGX00700)。

摘　　要：为了增大天线带宽、消除超宽带天线的方向图畸变影响以及减小天线尺寸,设计了一款超宽带小型化天线。通过在天线辐射金属开槽,来减少天线的边缘电流,抑制边缘处表面波,使得能量集中在槽线附近,提高辐射效率,并实现方向图无畸变。通过在金属辐射表面加载电阻、在馈电微带线末尾加载开路腔和在槽线末尾加载短路腔,实现宽频带的阻抗匹配。两天线正交放置组成垂直水平双极化天线,适用场景更多。仿真结果表明,该天线在0.15~1.05 GHz(相对带宽为150%)内实现电压驻波比小于2,天线的尺寸为420 mm×320 mm,平面尺寸仅有0.14λ_(0)×0.106λ_(0)(λ_(0)为工作最大波长),实现了天线小型化。该天线在超宽带无线通信领域有应用前景。In order to increase the antenna bandwidth,eliminate the distortion of the ultra wide band(UWB)antenna pattern and reduce the antenna size,a miniaturized UWB antenna is designed.By radiating metal slots in the antenna,the edge current of the antenna is reduced,the surface wave at the edge is suppressed,the energy is concentrated near the slot line,the radiation efficiency is improved,and the orientation pattern is distortion free.By loading resistance on the metal radiation surface,an open cavity at the end of the feed microstrip line and a short circuit cavity at the end of the slot line,the impedance matching of a wide band is realized.The two antennas are placed orthogonal to form a vertical and horizontal dual-polarized antenna,which is suitable for more scenarios.The simulation results show that the voltage standing wave ratio(VSWR)of the antenna is less than 2 in 0.15~1.05 GHz(relative bandwidth is 150%).The antenna size is 420 mm×320 mm,and the plane size is only 0.14λ_(0)×0.106λ_(0)(λ_(0) is the maximum working wavelength),which realizes the antenna miniaturization.The antenna has a promising application in the field of ultra-wideband wireless communication.

关 键 词：VIVALDI天线 超宽带 小型化 双极化 

分 类 号：TN822.8[电子电信—信息与通信工程]