A Miniaturized Metamaterial Patch Antenna for C-band Satellite Applications

Abstract

A novel miniaturized rectangular patch antenna using four split ring resonators designed with dimensions 20 x 15 x 1.6 mm3.circular patched ground plane taken for impedance matching of the circuit. For enhancement in the bandwidth, gain, and return loss of an Antenna, new material, i.e., the metamaterial, is added to the back of the antenna, which has unique properties like negative permittivity and permeability. Antenna achieved the dual­band used for WiMAX (3.53­3.73GHz) and C­band (4.39­6.56GHz) used for satellite downlink applications with a maximum return loss of ­29.8dB. To reduce the return loss, the optimetrics technic is applied by varying the length of the ground plane. With these four bands with the highest return loss, about ­42.44dB at 6.55GHz is achieved at 5mm of ground length. The miniaturization is achieved up to 67% compared to previous works, and the antenna’s efficiency is 95.3%. Proposed antenna designed and simulated using HFSS 2021R.