Dual Linearly Polarized 2x4 Subarray Antenna for Phased Array System in Satellite Communications

To create a more efficient and reliable satellite communication system, a phased array antenna with a polarized transmitter and receiver is required, especially in environments with high interference and a need for high data capacity. To support this specification, a circular dual linearly polarized circular patch array antenna was designed at a frequency of 12.55 GHz with rhombus-shaped feeding. The proposed antenna design achieved an S11 parameter below -14 dB, a high gain of 11.76 dBi, a bandwidth of 916 MHz and dual linear polarization. The comparison between cross-polarization and co-polarization at phi=90 and phi=0 effectively transmits and receives electromagnetic waves with vertical and horizontal electric field orientation. The result of antenna simulation is compatible with phased array systems in satellite communication systems.

I. Introduction

A satellite mobile communication system is highly effective for wide-area coverage due to its reliable performance, minimal interference, and flexible network configuration. Its communication costs are not influenced by distance, and it offers extensive coverage irrespective of geographical conditions. This system provides users with high-quality voice, short messaging, fax, and data services, which are invaluable for scientific research, geological exploration, disaster relief, emergency rescue, and remote tourism [1].