A Novel Dual-Band Four Port MIMO Antenna Design for 28/38 GHz Millimeter-Wave 5G Applications

Abstract

This paper introduces a novel dual-band Multiple-Input Multiple-Output (MIMO) antenna specifically crafted for 5G millimeter-wave communication systems. The antenna is designed to operate within the frequency spectrum of 26 to 31 GHz and 34.5 to 40 GHz. Notably, at 28 GHz, the antenna attains an impressive gain of 10.6 dBi, coupled with an efficiency exceeding 70%. Meanwhile, at 38 GHz, the gain remains substantial at 6.65 dBi, with an efficiency of 50%. Simulation results indicate an average isolation of approximately -30 dB between antenna elements. The diversity gain is nearly 10 dB, and the error-correcting code measures less than 1 × 10-6, highlighting superior performance compared to prior antenna designs. These robust dual-band MIMO antenna performance metrics make it a highly promising solution for millimeter-wave 5G applications.