Dual band and dual mode antenna for power efficient body-centric wireless communications

This paper presents a dual band and diverse radiation mode antenna for power efficient and reliable on-body and off-body communications. The antenna is dual band with omnidirectional radiation pattern over the body surface at 2.45 GHz (ISM band) to communicate power efficiently with other co-located body worn devices scattered on the body or body worn base station. At 1.9 GHz (PCS band), it has with directive radiation pattern towards off-the body to communicate power efficiently from on-body device to off-body units/access point or other wider e-health networks. Free space and on-body measured and simulated performances of the proposed antenna are shown and analyzed. The antenna shows very good on-body radiation efficiency as 58.23 % for 1.9 GHz and 50.41 % for 2.45 GHz. In addition, good measured on-body gain is noticed at both frequency bands. Increase of 17.39 % gain at 2.45 GHz is noticed when measured on the body.

[1]  Yang Hao,et al.  Parametric Study of Wearable Antennas with Varying Distances from the Body and Different On-Body Positions , 2007 .

[2]  John C. Batchelor,et al.  Antennas and Propagation for Body-Centric Wireless Communications , 2012 .

[3]  C. Gabriel.  Compilation of the Dielectric Properties of Body Tissues at RF and Microwave Frequencies. , 1996 .

[4]  W. Stork,et al.  APPLICATION OF UBIQUITOUS COMPUTING IN PERSONAL HEALTH MONITORING SYSTEMS , 2002, Biomedizinische Technik. Biomedical engineering.

[5]  William G. Scanlon,et al.  Stacked-patch antenna with switchable propagating mode for UHF body-centric communications , 2009, 2009 IEEE International Workshop on Antenna Technology.

[6]  Z. H. Hu,et al.  Characterisation of narrowband communication channels on the human body at 2.45 GHz , 2010 .

[7]  Yang Hao,et al.  Numerical and Experimental Evaluation of a Compact Sensor Antenna for Healthcare Devices , 2007, IEEE Transactions on Biomedical Circuits and Systems.

[8]  C. Parini,et al.  Antennas and propagation for on-body communication systems , 2007, IEEE Antennas and Propagation Magazine.

[9]  Constantine A. Balanis,et al.  Antenna Theory: Analysis and Design , 1982 .

[10]  William G. Scanlon,et al.  Analysis of the performance of IEEE 802.15.4 for medical sensor body area networking , 2004, 2004 First Annual IEEE Communications Society Conference on Sensor and Ad Hoc Communications and Networks, 2004. IEEE SECON 2004..

[11]  Yang Hao,et al.  Statistical Analysis and Performance Evaluation for On-Body Radio Propagation With Microstrip Patch Antennas , 2007, IEEE Transactions on Antennas and Propagation.

[12]  John C. Batchelor,et al.  Covert dual-band wearable button antenna , 2006 .

[13]  W. Scanlon,et al.  Antennas for Over-Body-Surface Communication at 2.45 GHz , 2009, IEEE Transactions on Antennas and Propagation.

[14]  Rahim Tafazolli,et al.  Body Centric Context Aware Application Scenarios , 2007 .

[15]  Ray Bert,et al.  Book Review: Smith, Currie & Hancock's Common Sense Construction Law, Third Edition , edited by Thomas J. Kelleher, Jr. Hoboken, New Jersey: John Wiley & Sons, Inc., 2005 , 2005 .