一种基于GPS应用的宽带圆极化天线设计  

Design of A Broadband Circularly Polarized Antenna Based on Global Positioning System(GPS)Application

作　　者：姚曼 张丽红 YAO Man;ZHANG Li-hong(School of Machinery and Materials Engineering,Xi’an University,Xi’an 710065,China)

机构地区：[1]西安文理学院机械与材料工程学院,西安710065

出　　处：《西安文理学院学报（自然科学版）》2020年第3期62-66,共5页Journal of Xi’an University(Natural Science Edition)

摘　　要：根据GPS的L2(1227 MHz±10.23 MHz)和L5(1176 MHz±12 MHz)两个工作频带相邻的特性,设计了一个可以覆盖这两个频带的宽频带圆极化天线.该天线采用空气作为介质,利用探针进行馈电,并设计了一种宽频带90°移相功分网络.所设计的天线经过仿真优化后,加工实物并测试,实测天线驻波带宽26%,轴比小于2.2 dB,增益大于4.8 dBi.实测结果与仿真结果吻合良好,达到天线技术指标要求.In this paper,according to the adjacent characteristics of two working bands of L 2(1227 MHz±10.23 MHz)and L 5(1176 MHz±12 MHz),a broadband circularly polarized antenna that can cover these two bands is designed.The antenna uses air as the medium,uses the probe as the feed,and a wide-band 90°phase-shifting power division network is designed.After simulation and optimization,the designed antenna is processed and tested.The measured standing wave bandwidth is 26%,the axial ratio is less than 2.2 dB,and the gain is greater than 4.8dBi.The measured results are in good agreement with the simulation results,and meet the technical requirements of the antenna.

关 键 词：GPS 宽带 圆极化天线 

分 类 号：TN965.5[电子电信—信号与信息处理] TN828[电子电信—信息与通信工程]