Open AccessDielectric resonator‐based two‐element MIMO antenna system with dual band characteristics
Author(s) -
Das Gourab,
Sharma Anand,
Gangwar Ravi Kumar
Publication year - 2018
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.2017.0744
Subject(s) - dielectric resonator antenna , antenna (radio) , ground plane , optics , radiator (engine cooling) , acoustics , physics , resonator , electronic engineering , materials science , electrical engineering , engineering
In this research article, a dielectric resonator‐based multiple input multiple output (MIMO) antenna system is presented with dual band characteristics. The proposed MIMO antenna includes two symmetrical hybrid radiators. Each hybrid radiator consists of a modified annular ring printed line along with a cylindrical dielectric resonator antenna (CDRA). A modified annular ring printed line acts as a magnetic dipole and creates two different radiating modes (HEM 11 δ and TE 01 δ ) in the dielectric resonator. The approach of the hybrid antenna (combination of the modified annular ring printed line and CDRA) is taken into account for achieving dual band characteristics. Orthogonally placed antenna elements and a narrow slit in the ground plane are used to improve isolation (| S 12 | < −20 dB) in the entire operating frequency range. The antenna prototype is fabricated and measured for validating the simulated results. The proposed MIMO radiator is operating over two frequency bands, i.e. 1.75–2.4 and 3.5–5.5 GHz. Different MIMO diversity performance parameters (envelope correlation coefficient, diversity gain, mean effective gain, total active reflection coefficient, and channel capacity loss) are also inspected and found within acceptable limits.