Optimization of a new structure patch antenna for MIMO and 5G applications

In this work a new structure patch antenna for multiple-input multiple-output (MIMO) and fifth generation (5G) applications has been introduced. Simulation results are presented in this paper. The proposed design of the single antenna is based on rectangular structured slots in order to operate at multiple frequency bands. The slots are designed on the rectangular patch and fed by a microstrip feeder line. The single antenna has a very compact size of 3× 2 mm² with operating frequency equal to 20.67 GHz, it covers a large band (19-36.6 GHz). The desired antenna is designed on a substrate with a relative dielectric permittivity of 4.4 and its thickness is of 0.4 mm. It provides a wide bandwidth, a directional radiation pattern, a high gain and its reflection coefficient (S11) is less than -10 dB in the frequency range of 19-36.6 GHz that is one of the candidate bands for future 5G communications. The antenna array consists of eight elements with rectangular patch. It has a compact size of 35.52×28.79 mm². Simulation results indicate that the antenna not only has a very small power return loss but also exhibits a low mutual coupling highlighting the ability of the proposed design to operate in multiple-input multiple-output (MIMO) applications.