Study of Finite Ground Plane Effects in Circularly-Polarized Circular Microstrip Antennas

被引：0
|
作者：
Rezazadeh, Navid [1 ]
Shafai, Lotfollah [1 ]
机构：
[1] Univ Manitoba, Dept Elect & Comp Engn, Winnipeg, MB, Canada
来源：
2016 17TH INTERNATIONAL SYMPOSIUM ON ANTENNA TECHNOLOGY AND APPLIED ELECTROMAGNETICS (ANTEM) | 2016年
关键词：
finite ground plane; circular patch antennas; circular polarization; axial ratio beamwidth;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Finite ground plane effects of circularly-polarized circular microstrip antenna (CMA), working in dominant TM11 mode, are studied. The results of an analytic solution, based on the induced currents on the ground plane, show that the beamwidth where the axial ratio is below 3 dB, has its maximum value when the ground diameter is around 0.6 lambda. This result is verified by full-wave simulation and through experiment. Based on the results, we conclude that for a single circularly polarized CMA, a ground diameter around 0.68 lambda, ensures an axial ratio which remains below 3 dB in the upper hemisphere. This is particularly useful for the global positioning system.
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页数：2
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