Open AccessPattern diversity antenna with high‐temperature tolerance for body area networks
Author(s) -
Faiz Alam Muhammad,
Gogosh Nayab,
Rehman Abdul,
Shafique Muhammad Farhan,
Poussot Benoit,
Laheurte Jean Marc
Publication year - 2016
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.2015.0342
Subject(s) - antenna efficiency , antenna measurement , loop antenna , radiation pattern , antenna (radio) , antenna factor , antenna diversity , antenna noise temperature , coaxial antenna , physics , acoustics , electrical engineering , telecommunications , optics , computer science , engineering
A high‐temperature tolerant pattern diversity antenna is presented for body wearable applications in hostile conditions. The proposed system consists of a dielectric resonator antenna (DRA) placed at the centre of a slot loop antenna. The combination yields pattern diversity with broadside and endfire radiation patterns from slot loop and DRAs, respectively. The antenna system offers common bandwidth of 4.95% with port isolation of better than 13 dB at 2.4 GHz. The thermal characteristics of antenna have been studied for high‐temperature operation and no discernible change in the radiation behaviour is noted. The antenna undergoes 2% resonant frequency shift when operated at elevated temperature. The antenna diversity has been measured for three on‐body communication channels. The antenna offers 9.5 dB diversity gain in a pure non‐line‐of‐sight channel surrounded by a rich fading environment subjected to the selection combining scheme. The antenna has dimensions of 0.4 λ o × 0.4 λ o × 0.1 λ o .