A wideband and compact Fabry–Perot resonator antenna (FPRA) employing two layers of partially reflective surfaces (PRSs) is presented in this letter. The proposed PRSs with regular hexagonal units are used in wideband FPRA for the first time. Based on the compact arrangement of regular hexagon units and the addition of tripod branches, the size of FPRA is greatly reduced. Furthermore, the regular hexagonal units are arranged periodically along three directions on the 2-D plane, which means that one regular hexagon unit has six identical units around it. Therefore, there is a strong coupling between the PRS units, and units obtain a positive phase gradient in a wide range of 9.1–13.5 GHz, which is the basis for the formation of the wideband FPRA. The FPRA with dimensions of (2.2×2.2×0.6) λ ₀ ³ (λ ₀ is the wavelength of the center frequency) has a 3 dB gain bandwidth over 9.2–13 GHz, relatively 34.2%, with a peak gain of 14.2 dBi. The prototype has been fabricated and tested, and validate the simulated results.

中文翻译：

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采用正六边形单元部分反射表面的宽带紧凑型法布里鲁特谐振器天线


这封信中介绍了一种采用两层部分反射表面（PRS）的宽带紧凑型法布里-珀罗谐振器天线（FPRA）。所提出的具有正六边形单元的 PRS 首次用于宽带 FPRA。基于正六边形单元的紧凑排列和三脚架分支的增加，FPRA的尺寸大大减小。此外，正六边形单元在二维平面上沿三个方向周期性排列，这意味着一个正六边形单元周围有六个相同的单元。因此，PRS单元之间存在强耦合，单元在9.1~13.5 GHz的宽范围内获得正相位梯度，这是形成宽带FPRA的基础。尺寸为(2.2×2.2×0.6)λ ₀ ³ (λ ₀为中心频率的波长)的FPRA在9.2～13 GHz范围内具有3 dB增益带宽，相对34.2%，峰值增益为14.2 dBi。样机已经制作完成并进行了测试，并对模拟结果进行了验证。