基于HFSS的小型圆极化GPS微带天线设计与仿真

设计了一种GPS小型圆极化微带方形贴片天线。通过表面开槽的方法来减小天线尺寸和提高天线的整体性能,达到小型化的目的。通过切角的方法实现天线圆极化的工作方式。利用HFSS仿真软件对天线的各项参数做了具体的优化分析,给出了各个参量变化对天线性能的具体影响,对以后进一步研究双频或多频圆极化天线具有一定的参考意义。设计的GPS微带天线比同频下圆极化微带天线尺寸减小了20%,S₁₁参数在中心频率1.575 GHz处为-17 dB,频带宽度和轴比都有所提高,满足GPS的应用要求。

Design and Simulation of Circular Polarization Microstrip GPS Antenna Miniaturization Based on HFSS

This paper describes the design of a miniature CPS, which is circularly polarized microstrip square patch antenna. Miniaturization can be achieved by the method of grooving the surface to reduce the size of the antenna and improve the overall performance of the antenna. Implementation of circular polarized antenna works by cutting angle. Optimization analysis concerning all parameters of the antenna has been made by HFSS, and the effects of various parameters on the performance of the antenna are presented, which provides reference for further study of dual or multiple frequency circularly polarized antenna. The CPS microstrip antenna in design is 20% smaller in size than the circularly polarized microstrip antenna at the same frequency, 511 is - 17 dB at the center frequency 1. 575 CHz, and the bandwidth and axial ratio are improved. The design meets the requirements of the application of CPS.