A novel circularly polarised, CPW-based MIMO antenna for 5G-wireless communication in sub-6 GHz band

Abstract

ABSTRACT This paper proposes a circularly polarised co-planar waveguide (CPW) based on a two-component multiple-input-multiple-output (MIMO) antenna for 5 G communications in the band of sub-6 GHz. The practical dimension of the proposed antenna is 49.35 mm × 98.7 mm × 1.6 mm. Three complementary-split-ring-resonators (CSRR) are applied to resonate at 3.3 GHz and 3.84 GHz. The optimised proposed antenna can be used for 5 G LTE-band (n74-n78) worldwide, 2 G, 3 G, 4 G, WiFi and WiMAX applications (1 GHz–4.4 GHz). The radiation efficiency is significantly more than 60% and for the specified 5 G band (sub-6 GHz), the measured efficiency is 80% to 85%. The proposed antenna has achieved high isolation (more than 30 dB) and excellent diversity performance like Envelope Correlation Coefficient (ECC), Diversity Gain (DG), Total Active Reflection Coefficient (TARC) and Channel Capacity Loss (CCL). Simulated results are also verified with experimental results.