A Four-Port Novel Inset-Fed, Rectangular MIMO-Antenna Designed for 2.40 GHz Bluetooth & Wi-Fi Applications

Abstract

The research work presents a microwave access 4-port multiple input multiple (MIMO) output antenna designed on a FR4 epoxy substrate in this article. A single element design radiating electromagnetic energy is simulated and presented with the narrow bandwidth from 2.36-2.425GHz on $60\times 60$ mm2 substrate. The proposed antenna releasing EM wave provides the refection coefficient of −22.447dB at 2.4GHz and peak S22 reaches up to −27.1261dB. It is evident that the given antenna resonates at 2.4 GHz frequency band with acceptable reflection coefficient, bandwidth, and gain, which supports Bluetooth and Wi-Fi technology. The proposed design is then converted to the MIMO structure for mobile users, which offers good real and imaginary impedance of 50 ohm and 0 ohm respectively. The proposed antenna offers a peak gain of 2.63 dBi and radiation efficiency of more than 90% in communication technologies. The MIMO antenna exhibits good diversity performance, with to diversity gain ($\text{DG}_{2.4} > 9.999\text{dB}$), Envelope Correlation Coefficient $(\text{ECC}_{2.4} < 1.12\times 10^{-7})$, Total Active Reflection Coefficient $(\text{TARC}_{2.4} < -6\text{dB}),\ \text{CCL}2.4 < 0.30\mathrm{b}/\mathrm{s}/\text{Hz}$ and $\text{MEG}_{\mathrm{a}}-\text{MEG}_{\mathrm{b}}\approx 0dB$.