摘要
针对普通圆极化天线设计过程复杂和面积过大的缺点,设计了一款小型化的圆极化缝隙天线,通过加载超表面来实现小型化和圆极化。该超表面天线可以把2个垂直线极化波合成为1个圆极化波,采用不规则的斜十字结构,尺寸仅为25 mm×25 mm×4 mm,就可以在5.74~5.87 GHz范围内实现轴比小于3 dB。该天线结构简单、抗干扰能力强、辐射特性优异,适用于5.8 GHz的阅读器天线和ETC电子不停车收费。
To address the complexity issue of circularly polarized antenna,a compact circularly polarized slot antenna is designed with a loadable meta-surface used to realize compactness and circular polarization.The antenna can transform two linearly polarized waves into a circularly polarized wave.The design uses an irregular cross structure,and the size of antenna is only 25 mm＊ 25 mm＊4 mm.The axial ratio can be less than 3 dB within 5.74~5.87 GHz.The antenna features simple structure,strong anti-interference capability and good radiation pattern,and it can be used for ETC electronic toll collection and 5.8 GHz reader antenna.
出处
《无线电工程》
2017年第8期44-47,共4页
Radio Engineering
基金
国家自然科学基金重点项目(61531016)
国家自然科学基金资助项目(61271090)
四川省科技支撑计划基金资助项目(2015GZ0103)
关键词
圆极化
超表面
小型化
可加载
circular polarization
meta-surface
compact
loadable
