C-Band Horn Antenna Fed by Rectangular Microstrip Patch

This research proposes a new horn antenna design fed by a microstrip antenna working at the C-band frequency. It combines flared horn and a multilayer microstrip patch antenna as a microstrip feed flare horn antenna. The microstrip antenna consists of a rectangular patch fed using the proximity coupling technique. The proposed antenna has half-power beam widths at a frequency of 4.148 GHz on the E-plane and H-plane of 28.7° and 26.7°, respectively. The frequency bandwidth and gain are 3.93–4.27 GHz and 15 dB. The comparison antenna, the copper wire feed horn antenna, is also simulated in this study with a gain of 12.9 dB. The simulation results of the microstrip feed flare horn antenna combined with a parabolic reflector with a diameter of 2.4 meters produce a total gain of 34.5 dB. The proposed antenna design can be an alternative to antenna feed on the ground station antenna system.