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A Flexible Wearable Antenna for Location Tracking Applications

Sheheera Ismail(1*), Patrick Gaydecki(2), Antony Barton(3)

(1) School of Electrical and Electronic Engineering, University of Manchester, United Kingdom
(2) School of Electrical and Electronic Engineering, University of Manchester, United Kingdom
(3) School of Electrical and Electronic Engineering, University of Manchester, United Kingdom
(*) Corresponding author


DOI: https://doi.org/10.15866/irecap.v8i6.12717

Abstract


A compact planar wearable antenna has been modelled, fabricated and measured using a flexible polyimide film with copper clad laminate. The design exploits the bowtie design principle and geometrical miniaturization techniques to achieve the dimensions of 0.2 λ × 0.13 λ for λ of the GPS L1 carrier. The antenna changes its polarization discrimination to suit a linearly or circularly polarized signal by varying its physical configuration. The antenna is intended for a wearable device. It is enclosed in a customised strap and interfaced with a GPS receiver to evaluate time-to-first-fix in practical outdoor conditions. The design is easy to integrate with general purpose GPS receivers and does not rely on a noisy ground plane shared with a digital circuitry. It has a radiation efficiency of 98% in modelled free space.
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Keywords


Dipole; Miniaturization; Wearable Antenna; Flexible; Polarization

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References


NXP Philips, GPS, LNA, Sensitivity, Jamming, Cohabitation, TTFF for Global Position System Low Noise Amplifier, Document order number: 939775016740, 2009.

G. Monti, L. Corchia and E. D. Benedetto, Wearable logo-antenna for GPS–GSM-based tracking systems, IET Microwaves, Antennas & Propagation, vol. 10, no. 12, pp. 1332 - 1338, 2016.
https://doi.org/10.1049/iet-map.2015.0774

S. J. Boyes, P. J. Soh, et al, Measurement and Performance of Textile Antenna Efficiency on a Human Body in a Reverberation Chamber, IEEE Trans. Antennas Propag., vol. 61, no. 2, Feb 2013.
https://doi.org/10.1109/tap.2012.2225817

K. W. Lui, O. H. Murphy and C. Toumazou, A Wearable Wideband Circularly Polarized Textile Antenna for Effective Power Transmission on a Wirelessly-Powered Sensor Platform, IEEE Trans. Antennas Propag., vol. 61, no. 7, pp. 3873-6, 2013.
https://doi.org/10.1109/tap.2013.2255094

Johanson Technology, Inc., 1.575 & 1.602 GHz GPS/GLONASS SMD Chip Antenna, Part Number: 1575AT54A0010, 2015.

Sierra Wireless, AirPrime SL808X - Product Technical Specification & Customer Design Guidelines, Sep 2012.

S. Patel, H. Park, et al., A review of wearable sensors and systems with application in rehabilitation, Journal of NeuroEngineering and Rehabilitation, vol. 9, no. 21, 2012.

DuPont™, "DuPont™ Pyralux® AP flexible circuit materials - technical datasheet," H73241-9, 06 2012.

Girish Kumar, K.n P.Ray, Broadband Microstrip Antennas, Artech House, 2003.

G. Oliver, Using Flex in High-Speed Applications, The PCB Magazine, p. 90, 2014.

S. Diaham, S. Zelmat, M.-L. Locatelli, S. Dinculescu, M. Decup and T. Lebey, Dielectric breakdown of polyimide films: Area, thickness and temperature dependence, IEEE Transactions on Dielectrics and Electrical Insulation , vol. 17, no. 1, 2010.
https://doi.org/10.1109/tdei.2010.5411997

D. Rutledge and M. S. Muha, Imaging Antenna Arrays, IEEE Trans. Antennas Propag., vol. 30, no. 4, pp. 535-540, 1982.
https://doi.org/10.1109/tap.1982.1142856

U.S National Library of Medicine, Calculating body frame size, Medline Plus, 2014.

Daniele Andreuccet, Dielectric Properties of Body Tissues in the frequency range 10 Hz - 100 GHz, Italian National Research Council Institute for Applied Physics (2015) http://niremf.ifac.cnr.it/tissprop, 2015.

Intl.Telecom Union (ITU-R), Estimation of polarization discrimination in calculations of interference between geostationary-satellite networks in the fixed-satellite service, Rec. ITU-R S.736-3, 1992.

taoglas antenna solutions, The Cloud Flexible Polymer GPS/GLONASS/COMPASS Cloud shape antenna," SPE-13-8-010/B/AS, Part number: FXP611.07.0092C.

Ethertronics, Active Embedded Flat GPS Antenna with u.fl cable, Part number: ANT-NXP9551 2013.


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