Title :
Wearable Disc-Like Antenna for Body-Centric Communications at 61 GHz
Author :
Puskely, Jan ; Pokorny, Michal ; Lacik, Jaroslav ; Raida, Zbynek
Author_Institution :
Dept. of Radio Electron., Brno Univ. of Technol., Brno, Czech Republic
Abstract :
In this letter, we describe the design and simulation of on-body antennas for wireless body area network (WBAN) communication operating in the 61-GHz ISM frequency band. We developed a disc-like concept of an antenna. Instead of a direct connection between a circular disc and a feeding pin, the electromagnetic coupling is used. This concept enables us to obtain relatively broadband characteristics with omnidirectional radiation pattern and vertical polarization suitable for on-body communication. Impedance properties and radiation of the antenna were studied in open space and on a tissue-equivalent phantom representing the human body. Fabricated prototype is well matched from 59.3 to 63.4 GHz. The bandwidth of the antenna is about 7%. An antenna analyzed close to body tissue exhibits efficiency of at least 25% and the maximum gain 5.2 dB in the horizontal plane.
Keywords :
antenna radiation patterns; body area networks; electromagnetic wave polarisation; omnidirectional antennas; wearable antennas; ISM frequency band; WBAN communication; body-centric communications; electromagnetic coupling; frequency 61 GHz; gain 5.2 dB; omnidirectional radiation pattern; on-body antennas; on-body communication; tissue-equivalent phantom; vertical polarization; wearable disc-like antenna; wireless body area network; Antenna measurements; Antenna radiation patterns; Gain; Horn antennas; Phantoms; 61-GHz ISM band; body area network; body-centric communication; disc-like antenna; wearable antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2367812
