NDLI: Antennas for Over-Body-Surface Communication at 2.45 GHz

Content Provider	IEEE Xplore Digital Library
Author	Conway, G.A. Scanlon, W.G.
Copyright Year	1963
Abstract	In this paper, the on-body performance of a range of wearable antennas was investigated by measuring \|S ₂₁\| path gain between two devices mounted on tissue-equivalent numerical and experimental phantoms, representative of human muscle tissue at 2.45 GHz. In particular, the study focused on the performance of a compact higher mode microstrip patch antenna (HMMPA) with a profile as low as lambda/20. The 5- and 10-mm-high HMMPA prototypes had an impedance bandwidth of 6.7% and 8.6%, respectively, sufficient for the operating requirements of the 2.45-GHz industrial, scientific, and medical (ISM) band and both antennas offered 11-dB higher path gain compared to a fundamental-mode microstrip patch antenna. It was also demonstrated that a 7-dB improvement in path gain can be obtained for a fundamental-mode patch through the addition of a shortening wall. Notably, on-body HMMPA performance was comparable to a quarter wave monopole antenna on the same size of groundplane, mounted normal to the tissue surface, indicating that the low-profile and physically more robust antenna is a promising solution for bodyworn antenna applications.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	844
Ending Page	855
Page Count	12
File Size	2391601
File Format	PDF
ISSN	0018926X
Volume Number	57
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microstrip antennas Hidden Markov models Patch antennas Antenna measurements Gain measurement Performance gain Imaging phantoms Humans Muscles Microstrip components wearable antennas Bodyworn low-profile antenna on-body communications printed antennas
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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