In Situ Measurement of UHF Wearable Antenna Radiation Efficiency Using a Reverberation Chamber

Autor:	William Scanlon, C. Walker, Gareth A. Conway, Charlie Orlenius
Rok vydání:	2008
Předmět:	Physics Optics Ultra high frequency business.industry Finite-difference time-domain method Resonance Near and far field Electrical and Electronic Engineering Radiation business Imaging phantom Antenna efficiency Electromagnetic reverberation chamber
Zdroj:	IEEE Antennas and Wireless Propagation Letters. 7:271-274
ISSN:	1548-5757 1536-1225
DOI:	10.1109/lawp.2008.920753
Popis:	The radiation efficiency and resonance frequency of five compact antennas worn by nine individual test subjects was measured at 2.45 GHz in a reverberation chamber. The results show that, despite significant differences in body mass, wearable antenna radiation efficiency had a standard deviation less than 0.6 dB and the resonance frequency shift was less than 1% between test subjects. Variability in the radiation efficiency and resonance frequency shift between antennas was largely dependant on body tissue coupling which is related to both antenna geometry and radiation characteristics. The reverberation chamber measurements were validated using a synthetic tissue phantom and compared with results obtained in a spherical near field chamber and finite-difference time-domain (FDTD) simulation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::832fb0085aa2d3c5741d1dc8cd60fa04 https://doi.org/10.1109/lawp.2008.920753 Zobrazit plný text záznamu