电子元件与材料2023，Vol.42Issue(11)：1391-1395,5.DOI:10.14106/j.cnki.1001-2028.2023.0200
一种宽带高增益圆极化超表面天线
A wideband high-gain circularly polarized metasurface antenna
摘要
Abstract
A wideband high-gain circularly polarized antenna was proposed based on metasurface.First,an improved planar spiral antenna was utilized as feed.The spiral arm width first increased and then decreased,which both tightly wrapped the arm and shortened the arm length.The circular polarization performance was improved while the antenna size was reduced.Second,a wideband monolayer metamaterial unit structure was designed with a tunable phase of 360°,which was used to form a reflectarray by periodic arrangement.Finally,the feed was placed at the focus of the metasurface to realize the overall design of the high-gain antenna.The experimental results show that the peak gain of the proposed antenna can reach 23.2 dBic,and the gain bandwidth of 3 dB is 44%(4.8-7.5 GHz).The impedance is well matched(VSWR<1.5),and circular polarization satisfies the requirement(AR<3 dB)in this band.The measured results are in good agreement with the simulation ones.The directional pattern of the antenna is stable,and the electromagnetic energy is concentrated.关键词
平面螺旋天线/超表面/高增益/圆极化/宽带Key words
planar spiral antenna/metasurface/high-gain/circularly polarized/wideband分类
信息技术与安全科学引用本文复制引用
傅世强,杨鑫,徐之遐..一种宽带高增益圆极化超表面天线[J].电子元件与材料,2023,42(11):1391-1395,5.基金项目
毫米波国家重点实验室(K202202) （K202202）
大连市科技人才创新支持计划资助课题(2022RQ034) （2022RQ034）
