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

被引：34

作者：

Conway, Gareth A. ^{[1
]}

Scanlon, William G. ^{[1
]}

Orlenius, Charlie ^{[2
,3
]}

Walker, Chris ^{[4
]}

机构：

[1] Queens Univ Belfast, Belfast BT3 9DT, Antrim, North Ireland

[2] Bluetest AB, Gothenburg, Sweden

[3] Chalmers Univ Technol, S-41296 Gothenburg, Sweden

[4] European Antennas, Newmarket CB8 9RG, Suffolk, England

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2008年 / 7卷 / 271-274期

基金：

英国工程与自然科学研究理事会;

关键词：

Bodyworn antennas; on-body communications; wearable antenna radiation efficiency;

D O I：

10.1109/LAWP.2008.920753

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页码：271 / 274

页数：4

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