U-Shaped Microstrip Patch Antenna with Partial Ground Plane for Mobile Satellite Services (MSS)

This paper presents a compact planar monopole microstrip patch antenna with a U-shaped patch and a diagonally cut partial ground plane. It has been designed and simulated on commercially available low-cost FR-4 material with relative permittivity $\varepsilon$ of 4.3 and 0.025 loss tangent. Miniaturization of the original antenna has been achieved by optimizing the chamfered length of the partial ground plane as well as introducing a cut in the patch and optimizing this cut in order to achieve a U-shaped structure. The overall dimension of the proposed antenna is $20 \times 20 \times 1.5$ mm $^{3}$. The gain of the first band (from 1.9 to 2.2 GHz) is 3.2 dB, and for second band (from 3.9 to 4.8 GHz) is 1.2 dB and the radiation efficiency of the first band is 22% and for second band is 75% is observed. This paper presented a low-gain, Dual-band compact monopole antenna. The simulation has been done through CST Microwave studio. The proposed antenna detailed structure with simulated return loss, parameter study, impedance curve, the radiation pattern of the proposed antenna are elaborated in this paper. The proposed antenna can be used for Space to earth, Mobile Satellite Services (MSS).