Dielectric resonator-based wide band circularly polarized MIMO antenna with pattern diversity for WLAN applications

A novel dielectric resonator (DR)-based wideband circularly polarized multiple input multiple output (MIMO) antenna with pattern diversity is proposed in this article for wireless local area network applications. In this proposed MIMO antenna, 2 rectangular DRs and a single square DR are stepped together to generate circular polarization characteristics as well as pattern diversity. Along with this, an orthogonal probe feeding network is deployed in the design to limit the inter-port coupling. Experimentally tested outcomes revealed that the proposed radiator has a 10-dB impedance bandwidth of 21.51% and a 3-dB axial ratio bandwidth of 13.23%. Besides, results of MIMO diversity performance parameters demonstrate that the proposed antenna is well suitable for MIMO applications.