Miniaturized Two-element MIMO Antenna with neutralization line and an asymmetric open slot for WLAN and IOT applications

Abstract

The miniaturized two-port antenna is presented in this paper using a novel neutralized line along with asymmetrical open slot in ground plane. The neutralized line is incorporated between elements of antenna which produces current null with improvement in the port isolation up to 12 dB. The asymmetric open slots are used to weaken the movement of surface waves between ports which improves the isolation up to 17 dB. The size of the miniaturized antenna is 0.32 λ0 x 0.26 λ0 with an edge distance of 0.13 λ0 achieving the maximum port isolation of 35 dB. The operating bandwidth of a Two-port MIMO antenna varies from 4.95 GHz to 5.45 GHz frequency and would be prominent in the IoT/Wi-Fi and WLAN applications.