On-body measurements of SS-UWB patch antenna for WBAN applications

Abstract In this paper, performance of a Swastika slot-ultra-wideband (SS-UWB) patch antenna for an on-body application is investigated. This antenna is intended for the use in UWB wireless body area network (WBAN) applications, between 3.1 and 10.6 GHz. The proposed antenna is a SS-UWB patch antenna of dimension 27 mm × 27 mm × 1.6 mm. It is fabricated and tested in free space scenario instead in anechoic chamber to obtain more realistic on-body measurement results. This SS-UWB patch antenna covers the ultra-wide frequency spectrum in the range 4.25–12.5 GHz [8.25 GHz] with a quasi-omni directional gain from 1.77 to 5.6 dB. This antenna's efficiency is from 81.3% to 90.67% (−1.8 to −0.85 dB) over free space. The antenna is characterized in free space as well as on body model with and without antenna body gap. Measured results obtained from the antenna like S11, radiation pattern, antenna efficiency, and gain are matched with the simulated results.

[1]  C Gabriel,et al.  The dielectric properties of biological tissues: I. Literature survey. , 1996, Physics in medicine and biology.

[2]  Jianfeng Wang,et al.  Applications, challenges, and prospective in emerging body area networking technologies , 2010, IEEE Wireless Communications.

[3]  Bharat Gupta,et al.  Swastika slot UWB antenna for body-worn application in WBAN , 2014, 2014 8th International Symposium on Medical Information and Communication Technology (ISMICT).

[4]  Akram Alomainy,et al.  UWB on-body radio propagation and system modelling for wireless body-centric networks , 2006 .

[5]  R. W. Lau,et al.  The dielectric properties of biological tissues: II. Measurements in the frequency range 10 Hz to 20 GHz. , 1996, Physics in medicine and biology.

[6]  Xue Ni Low,et al.  A UWB Dipole Antenna With Enhanced Impedance and Gain Performance , 2009, IEEE Transactions on Antennas and Propagation.

[7]  P.S. Hall,et al.  Comparison between two different antennas for UWB on-body propagation measurements , 2005, IEEE Antennas and Wireless Propagation Letters.

[8]  Yang Hao,et al.  Characterisation of printed UWB antennas for on-body communications , 2005 .

[9]  Bharat Gupta,et al.  Performance analysis of swastika slot UWB antenna in vicinity of dispersive human layered tissue model , 2014, 2014 IEEE REGION 10 SYMPOSIUM.

[10]  Ingrid Moerman,et al.  A survey on wireless body area networks , 2011, Wirel. Networks.

[11]  Yang Hao,et al.  Transient Characteristics of Wearable Antennas and Radio Propagation Channels for Ultrawideband Body-Centric Wireless Communications , 2009, IEEE Transactions on Antennas and Propagation.

[12]  P.S. Hall,et al.  Antennas and propagation for body centric wireless communications , 2012, IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005..

[13]  N Chahat,et al.  A Compact UWB Antenna for On-Body Applications , 2011, IEEE Transactions on Antennas and Propagation.

[14]  G. Troster,et al.  Novel small-size directional antenna for UWB WBAN/WPAN applications , 2005, IEEE Transactions on Antennas and Propagation.

[15]  Yang Hao,et al.  Compact body-worn coplanar waveguide fed antenna for UWB body-centric wireless communications , 2007 .

[16]  M. Klemm,et al.  EM ENERGY ABSORPTION IN THE HUMAN BODY TISSUES DUE TO UWB ANTENNAS , 2006 .

[17]  T.S.P. See,et al.  Experimental Characterization of UWB Antennas for On-Body Communications , 2009, IEEE Transactions on Antennas and Propagation.

[18]  Christopher R. Anderson,et al.  A parametric study of time-domain characteristics of possible UWB antenna architectures , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).

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

[20]  Jari Iinatti,et al.  Monopole Ultra Wideband antenna for on-body communication in Wireless Body Area Network , 2011, 2011 Loughborough Antennas & Propagation Conference.