Open AccessBroad‐band embroidered spiral antenna for off‐body communications
Author(s) -
Zhang Shiyu,
Paraskevopoulos Anastasios,
Luxey Cyril,
Pinto Jon,
Whittow William
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.2015.0848
Subject(s) - spiral antenna , antenna (radio) , antenna measurement , radiation pattern , acoustics , coaxial antenna , antenna factor , imaging phantom , omnidirectional antenna , dipole antenna , antenna gain , antenna efficiency , optics , engineering , physics , electrical engineering
An embroidered wearable spiral antenna is presented in this study. The spiral antenna is compact and flexible, yet has broad‐band performance. The novelty of this study includes considering the antenna–body interaction rather than just considering the antenna alone. The antenna has been simulated and measured on a specific anthropomorphic mannequin torso phantom and a real person. The far‐field on‐body performance of the embroidered antenna on the phantom has been measured using a novel cylindrical near‐field to far‐field transformation technique. This technique allows the fast extraction of the full spherical radiation pattern and the corresponding far‐field antenna characteristics on the human body without the need of rotating the phantom with expensive positioning systems. The on‐body antenna performance including realised gain, directivity, radiation efficiency, radiation pattern and axial ratio have been presented.