Design of a compact MIMO antenna with polarization diversity technique for wireless communication

Abstract

The present wireless communication with MIMO antennas, takes the advantages of high data rate and high capacity and requires dual polarization for the coverage of vertically and horizontally polarized signals. A G shaped polarization diversity MIMO antenna with ground modification techniques and perfect boundary conditions is proposed to resonate at 2.47 GHz for wireless communication. It covers 2.39-2.7126 GHz of common frequency spectrum for WLAN, WIMAX, and LTE bands. The size of the FR4 substrate used for MIMO antenna is 0.58λ × 0.29λ mm2. The proposed design shows less than -23 dB of mutual coupling, peak gain of more than 2.5 dB for each antenna, and common bandwidth of 32.26% respectively.