Engineering

3G MIMO

MIMO

Biology

Isolation (microbiology)

Materials science

Telecommunications

Computer science

Antenna (radio)

Acoustics

Beamforming

Physics

Dielectric

Microbiology

Electronic engineering

Resonator

Dielectric resonator antenna

Dielectric resonator

Optoelectronics

Electrical engineering

IEEE Antennas and Wireless Propagation Letters

A multiple-input–multiple-output dielectric resonator antenna with enhanced isolation is proposed in this letter for the future 5G millimeter (mm)-wave applications. Two rectangular dielectric resonators (DRs) are mounted on a substrate excited by rectangular microstrip-fed slots underneath DRs. Each DR has a metal strip printed on its upper surface moving the strongest part of the coupling field away from the exciting slot to improve the isolation between two antenna elements. The proposed antenna obtains a simulated impedance bandwidth ( S 11 ≤ –10 dB) from 27.25 to 28.59 GHz, which covers the 28 GHz band (27.5–28.35 GHz) allocated by the Federal Communications Commission for the 5G applications. A maximum improvement of 12 dB on the isolation over 27.5–28.35 GHz is achieved. The mechanism of the isolation improvement and the design procedure are given in this letter. A prototype is manufactured and measured as a validation of the proposed decoupling method.

A MIMO Dielectric Resonator Antenna With Improved Isolation for 5G mm-Wave Applications