Gain enhancement of wideband Fabry-Perot resonator antennas using a short horn

This paper presents a wideband high-gain antenna with a compact, simple and low-profile structure. A Fabry-Perot resonator antenna with truncated superstrates that exhibit increasing phase at the operating band is applied to design a wideband antenna at first. Furthermore, by integration with a surface-mounted short pyramidal horn, the gain can be enhanced without compromising other performance. A prototype was developed to operate at 11-14 GHz and the test results show a 3-dB directivity bandwidth of about 24.7% and the directivity of 19-21 dBi within the bandwidth.

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