Six-Port Quarter Wavelength Slotted MIMO Antenna for 5G Mobile Phone

In this article, six-port Multi-Band MIMO antenna is presented for 5G mobile phone applications. The proposed antenna array is designed by making six open-ended slots in the ground plane which is printed on the backside of 0.8 mm thick FR4 substrate. The proposed antenna operates in the frequency band 3.33 GHz–3.63 GHz (covers LTE band 42) with − 10 dB impedance bandwidth of 300 MHz. Nevertheless, for 3:1 VSWR (− 6 dB impedance bandwidth), the total bandwidth is 500 MHz from 3.3 to 3.8 GHz (includes LTE bands 43, 48, 49 and 52). The prototype of the six-element antenna array is fabricated and measured. The measured isolation is better than 16 dB without employing any decoupling techniques, making the antenna highly equipped for 5G mobile applications. MIMO parameters like Envelope Correlation Coefficient, and Peak Channel Capacity are measured. The robustness of the six-port MIMO antenna system is validated by estimating the user's hand effects and Specific Absorption Rate. Better agreement between the simulated and measured results exhibit, the proposed antenna is a promising candidate for future cellular applications.