Open AccessDielectric resonator based MIMO antenna system enabling millimetre‐wave mobile devices
Author(s) -
Sharawi Mohammad S.,
Podilchak Symon K.,
Hussain Mohamed T.,
Antar Yahia M.M.
Publication year - 2017
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2016.0457
Subject(s) - mimo , extremely high frequency , antenna (radio) , antenna efficiency , dielectric resonator antenna , electronic engineering , antenna array , microstrip antenna , physics , optics , resonator , acoustics , computer science , electrical engineering , engineering , telecommunications , beamforming
In this study, a millimetre‐wave dielectric resonator (DR)‐based multiple‐input–multiple‐output (MIMO) antenna system based on two linear arrays is presented. Each array that represents a single MIMO antenna consists of four cylindrical DR antenna (cDRA) elements operating at 30 GHz with a bandwidth of at least 1 GHz. Each array is designed with a fixed beam direction which is tilted to provide low field correlation. A passive microstrip‐based feed network was designed to achieve this beam tilting enabling suitable magnitude and phase excitation of the individual cDRAs for radiation. The complete antenna system was designed on a two‐layer substrate occupying 48 mm × 21 mm. Excellent field correlation values were measured (below 0.002) across the band of operation while peak gains were >7 dBi. High radiation efficiency is obtained. The proposed design approach for beam tilting, which enables MIMO operation, may also be useful for other compact implementations to support 5G communications.