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A Flexible Wearable Antenna for Location Tracking Applications

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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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Dipole; Miniaturization; Wearable Antenna; Flexible; Polarization

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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.

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.

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.

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.

D. Rutledge and M. S. Muha, Imaging Antenna Arrays, IEEE Trans. Antennas Propag., vol. 30, no. 4, pp. 535-540, 1982.

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), 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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