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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(GNSS)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.
In order to reduce the antenna cost and improve the antenna performance, a low-cost antenna suitable for the global navigation satellite system (GNSS) terminal is proposed using the inexpensive FR4 dielectric substrate and the printed circuit board technology. The antenna is fed by a single coaxial probe, The antenna needs to be matched and the structure of the antenna is simple.A good right-hand circular polarization receiver is achieved by adjusting the size and position of the circular slot embedded in the radiating patch.The test results of the antenna show that the antenna is in the 1559-1592MHz band The voltage standing wave ratio is less than 2, the axial ratio is less than 6dB, the gain is higher than 2.8dBi, 3dB beamwidth is greater than 90 °, which can meet the technical requirements of GNSS terminal system.