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文中设计了一种新型的单馈点圆极化微带天线,通过在贴片的对角线方向上开对称的圆孔形成圆极化工作方式。对该天线进行了仿真优化,结果表明天线工作在1.575 GHz的GPS频段,工作频带上轴比性能良好,相比于没有开孔的圆形贴片天线尺寸有所减小,并且具有较好的波瓣宽度。最后实际加工了相应的贴片天线并进行了测试,实测结果验证了这种设计的可行性。
In this paper, a new type of single-feed point circularly polarized microstrip antenna is designed. The circular polarization mode is formed by opening symmetrical circular holes in the diagonal direction of the patch. The antenna was simulated and optimized. The results show that the antenna operates in the GPS frequency band of 1.575 GHz, and the axial ratio in the working frequency band is good. Compared with the patch antenna without circular aperture, the size of the antenna is reduced and has better Lobe width. Finally, the actual processing of the corresponding patch antenna and tested, the measured results verify the feasibility of this design.