A Dual-Band Millimeter Wave SRR Loaded Printed Monopole with Annular Slot MIMO Antenna for 5G Applications

Abstract

This paper presents a two element dual-band multiple input multiple output (MIMO) antenna for millimeter-wave (mm-wave) applications at 28 and 38 GHz frequency bands. The proposed design consists of a printed monopole antenna with a split ring resonator (SRR) geometry in the top layer and an annular slot in the defected ground plane. A single antenna element along with the connector model has initially been designed with a detailed analysis and subsequently, the two-port MIMO antenna with connectors has been realized. By precisely optimizing the design parameters, the geometry exhibits broadside radiation performance at 28 GHz and 38 GHz. A considerable gain and wide impedance characteristics are also observed in both bands for both the antennas. Several MIMO parameters, such as envelope correlation coefficient, total active radiation coefficient, and channel capacity loss are also calculated, and the results are suitable for 5G mobile applications. Finally, both the antenna prototypes are fabricated and their results are in close agreement with the simulated responses, validating the proposed concepts © 2022 European Microwave Association (EuMA).