A 2 × 2 dual-band MIMO antenna with polarization diversity for wireless applications

Abstract

A compact 2×2 dual-band MIMO antenna is proposed with polarization diversity technique for present wireless applications. The proposed design combines the horizontally and vertically polarized radiating elements. The effect of mutual coupling between radiating elements is reduced by partially stepped ground (PSG) and by the orthogonal placement of antenna elements. The whole configuration is designed over a substrate of size 70 × 70mm2. The measured frequency bands extend from 2.408 to 2.776 GHz and 4.96 to 5.64 GHz frequencies with SWR < 2. The measured isolation is more than 21 dB between adjacent and diagonal ports. The measured peak gains at 2.54 GHz, and 5.26GHz resonant frequencies are 3.98 dBi and 4.13 dBi, respectively. The designed MIMO covers LTE bands (7/38/41), WLAN bands (2.4/5.2GHz), and WiMAX band (2.5/5.5GHz). The diversity performances in terms of peak gain, ECC, and MEG have also been reported.