Al2 O3 Ceramic Based Dual-Mode Dielectric Resonator MIMO Antenna for Wireless Standards

This letter presents a dual port with dual-mode characteristics dielectric resonator-based MIMO antenna. A square shape aperture is used to excite the DRA and generates two resonating frequencies of 2.36 GHz and 3.53 GHz respectively. The attractive attributes of the presented antenna are (i) able to generate two distinct hybrid modes i.e HE_11δ and HE_11δ+1 at two different resonating frequencies and hence provide different radiation characteristics (ii) with the dual-band operation it covers important bands for wireless standards i.e (WLAN/WiMAX). With the assistantship of circular shape feed line isolation (S₁₂) <; -15 dB is achieved between the two ports. positive value of gains i.e (3.75 dBi & 3.5 dBi) and 90 % of radiation efficiency is obtained. The obtained values of the various diversity parameters i.e (ECC, DG, and TARC) confirm that the MIMO antenna has better diversity characteristics. The proposed design is modeled using HFSS and has been validated by using computer simulation software CST, a close agreement in the results approves the genuineness of the results obtained for the designed structure.