摘要
随着无线通信技术对人类生活影响力的提高,无线通信在通信领域的地位越来越重要。无线通信系统依靠无线电波传递信号,而无线电波的接收和发射则离不开天线。Vivaldi天线是一种超宽带天线,是渐变缝隙天线的一种特殊情况,也是一类经典的行波天线。但是,Vivaldi天线一般存在后向辐射大、主辐射方向增益低的缺点。可以通过对Vivaldi天线加载零折射率超材料的方式,在保证阻抗带宽不变的情况下,显著提高天线在整个频带内的增益。
With the increasing influence of wireless communication technology on human life,the status of wireless communication in the field of communication is becoming more and more important.Wireless communication systems rely on radio waves to transmit signals,while the reception and transmission of radio waves are inseparable from the antenna.The Vivaldi antenna is an ultra-wideband antenna that is a special case of a tapered slot antenna and a classic class of traveling wave antenna.However,Vivaldi antennas generally have the disadvantage of large back-radiation and low gain in the main radiation direction.The gain of the antenna over the entire frequency band can be significantly improved by applying a zero-refractive-index metamaterial to the Vivaldi antenna while maintaining the same impedance bandwidth.
作者
张月
井甜甜
杨君
徐娟
赵建平
ZHANG Yue;JING Tian-tian;YANG Jun;XU Juan;ZHAO Jian-ping(College of Physics and Engineering,Qufu Normal University,Qufu Shandong 273165,China)
出处
《通信技术》
2018年第12期2861-2865,共5页
Communications Technology
基金
山东省博士基金项目(No.ZR2017BF017)
国家青年科学基金项目(No.61701278)
毫米波国家重点实验室开放课题(No.K201929)~~
