摘要
设计了一款兼具小型化、超级宽带(SWB)和定向辐射性能的新型单极子天线。该天线通过对辐射板等分切角设计,提高了高频阻抗带宽的同时缩小天线尺寸;采用短路片加载技术,通过在辐射板和金属地之间增加两只短路片拓展了低频带宽,进一步实现天线小型化,结合等分切角设计获得了超级宽带;通过角反射器和倾斜辐射板实现定向辐射。设计并加工制作了天线样品,仿真和测试表明,不包括/包括反射面的天线尺寸分别为0.18λ×0.15λ×0.13λ和0.18λ×0.26λ×0.31λ,其中λ为天线工作频段低端对应波长;其|S11|<-10 dB的阻抗带宽比达到25.7∶1(0.97~25 GHz);具有良好定向辐射方向图,在工作频段内实际增益约1.6~11.3 dBi。天线结构简单,其良好性能使其在宽带无线通信等领域有重大应用前景。
A novel monopole antenna possesses miniaturization, super-wideband(SWB) and unidirectional properties simultaneously is proposed. The antenna is designed to increase the high-frequency impedance bandwidth while reducing the antenna size through the equal cutting angle design of the radiating plate;the short-circuit plate loading technology is adopted to expand the low-frequency bandwidth by adding two short-circuit plates between the radiating plate and the metal ground, and further realize the miniaturization of the antenna, combined with the equal slit angle design to obtain a super broadband;through the corner reflector and inclined radiation plate to achieve unidirectional radiation. The antenna sample was designed and processed. Simulation and testing showed that the antenna size without/including the reflective surface was 0.18λ×0.15λ×0.13λ and 0.18λ×0.26λ×0.31λ, where λ is the low end of the antenna working frequency band corresponding wavelength;its |S11|<-10 dB impedance bandwidth ratio reaches 25.7∶1(0.97~25 GHz);it has a good unidirectional radiation pattern, and the actual gain in the working frequency band is about 1.6~11.3 dBi. The antenna structure is simple, and its good performance makes it have great application prospects in the fields of broadband wireless communication.
作者
胡枭
陈星
Hu Xiao;Chen Xing(School of Electronic and Information Engineering,Sichuan University,Chengdu 610064,China)
出处
《电子测量技术》
北大核心
2021年第4期21-24,共4页
Electronic Measurement Technology
基金
四川省重点研发项目(2019YFG0404)资助。
作者简介
胡枭,硕士研究生,主要研究方向为天线设计。E-mail:826911202@qq.com;陈星,教授,主要研究方向为天线设计、并行计算、电磁场数值计算和微波成像等。E-mail:xingc@263.net。
