Abstract
This article suggested a Fabry-Perot cavity (FPC) antenna that is compact and wideband. The proposed antenna consists of a primary antenna fed by a coupling feedline and a partially reflective surface (PRS). A positive reflection phase gradient is produced by the PRS. And the PRS consists of hexagonal and circular patches over a wide frequency range of 8.4 to 11.2 GHz. This increases the bandwidth of the FPC antenna. The compact FPC antenna with small dimensions of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\boldsymbol{(1.6\times 1.6\times 0.6)\lambda_{0}^{3}(\lambda_{0}}$</tex> being wavelength at 10.4 GHz, which is the center frequency of the suggested antenna) has a -10 dB impendence bandwidth over 8.8-12 GHz, about 30.8%. Additionally, it has a 3 dB gain spanning the working range of 9.1 to 12 GHz, around 27.5%, with a maximum gain of 13.3 dBi at 11.4 GHz. Simulation results verify our design.
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