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针对圆极化反射阵圆极化带宽窄的问题,结合微带天线的谐振特性和线极化反射阵展宽带宽的思想,提出了一种“工-环”形多谐振宽带网极化反射阵单元,通过研究单元的电流分布对其实现宽带圆极化的原理进行了分析。采用改变单元旋转角度的方法设计了一副169个“工-环”形单元、中心频率为10GHz的右旋圆极化反射阵,并对其进行了测试:3dB轴比带宽达到41%(8.1GHz-12.2GHz),天线效率最高达59.94%(9.9GHz)。实测结果与仿真结果一致,实现了反射阵天线的宽带网极化和高效率。
Aiming at the problem of narrow circular polarization bandwidth of circularly polarized reflection array, combined with the resonant characteristics of the microstrip antenna and the wide bandwidth of the linearly polarized reflection array, a “worker-ring” multi-resonance broadband polarization Reflective array unit, through the study of the current distribution unit to achieve its broadband circular polarization principle. A set of 169 right-handed circularly polarized reflection arrays with a center frequency of 10GHz was designed by changing the rotation angle of the unit. The 3DB axis bandwidth was 41% (8.1GHz-12.2GHz), the highest antenna efficiency of 59.94% (9.9GHz). The measured results are in good agreement with the simulation results, realizing the broadband network polarization and high efficiency of the reflector array antenna.