Abstract
This study proposes the design of a planar microstrip array antenna with a rectangular patch shape as a feed antenna for a parabolic antenna system at the Himawari-8 satellite data receiving earth station. The antenna works in the frequency range of 3.8 - 4.2 GHz. Simulation using CST Microwave Studio. The planar microstrip array antenna design uses a Rogers RT/Duroid-5880 substrate with a dielectric constant of 2.2 and a thickness of 1.575 mm. The techniques and methods are proximity coupled feed, corporate feed, Dolph-Chebyshev, Wilkinson unequal power divider, double layer substrate, and a parabolic reflector. Simulation of a 4x4 planar microstrip array antenna with Rogers RT/Duroid-5880 material produces a bandwidth of 717.4 MHz at 3.6899 - 4.4073 GHz, a gain of 18.97 dB at 4.148 GHz, a directivity of 19.45 dB at 4.148 GHz, 97.54% efficiency, HPBW for the horizontal direction of 13.9° and HPBW for the vertical direction of 9.8°, and the resulting radiation pattern is directional. A 4x4 planar microstrip array antenna as a feed antenna with a 2.4-meter parabolic reflector produces a bandwidth of 717.4 MHz at 3.6899 - 4.4073 GHz. The gain is 26.57 dB at 4.148. GHz, the directivity of 27.04 dB at 4.148 GHz, the efficiency of 98.27%, HPBW for the horizontal direction of 4.6° and HPBW for the vertical direction of 1.4°, and the pattern is directional.
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