A C-Band Dual-Pol Compact Reflector Antenna with a Square Waveguide Feed

A C-band center-fed compact reflector antenna with dual linear polarization over a bandwidth of 25% is presented. To achieve this bandwidth, the feed uses a square waveguide, a polycarbonate neck, and a hat sub-reflector. The gain of the antenna is between 29 dBi and 32 dBi over the frequency range of 5-6.4 GHz. The main objective of the presented work is to extend the operating bandwidth of the high-gain antenna while keeping the structure of the feed as simple as possible. Measured antenna patterns, gain vs. frequency, cross-polarization vs. frequency, and S-parameters of the feed are presented.