一种低成本全球导航卫星系统终端天线

内容简介：为降低天线成本,提高天线性能,采用廉价FR4介质基板和印刷电路板技术,提出一种适用于全球导航卫星系统((NSS)终端的低成本天线.该天线由单一同轴探针馈电,不需要匹配电路,天线结构简单.通过调整嵌入在辐射贴片中圆形槽的尺寸和位置,实现了良好的右旋圆极化接收.对该天线的测试结果表明,天线在1559～1592MHz频带内电压驻波比小于2,轴比小于6dB,增益高于2.8dBi,3dB波束宽带大于90°,可满足GNSS终端系统的技术指标要求.

Abstract：To reduce cost of the antenna while improving its performance, a low cost patch antenna for global navigation satellite system (GNSS) terminal applications was proposed, and an inexpensive FR4 substrate and printed circuit board technology were used. The proposed patch antenna was excited by single coaxial probe without any match circuit, which can receive right hand circular polarization wave well by changing the size and position of circular groove embedded in circular resonator. Tests on the antenna show that the VSWR is less than 2, axial ratio (AR) is lower than 6 dB, the gain is better than 2.8 dBi, and 3dB beam width is more than 90°for the GNSS operating bands (1559～1592MHz), which can meet the technical requirements of GNSS terminal applications.

作者：王钟葆, 房少军, 张力敏, 栾秀珍,

关键词：全球导航卫星系统(GNSS), 终端天线, 低成本, 微带天线, 右旋圆极化,