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A Wearable Active Antenna for Global Positioning System and Satellite Phone

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3 Author(s)
Arnaut Dierck ; Department of Information Technology (INTEC), Ghent University, Ghent, Belgium ; Hendrik Rogier ; Frederick Declercq

A wearable multiband circularly polarized active antenna is presented for use in Global Positioning System and Iridium satellite phone applications. The square patch antenna is constructed using flexible foam and fabric substrates and conductors etched on thin copper-on-polyimide films. The feed substrate integrates a compact low-noise amplifier chip directly underneath the antenna patch. The antenna performance is studied under bending conditions and in the presence of a human body. The active antenna exhibits a gain higher than 25 dBi and a 3 dB axial ratio bandwidth exceeding 183 MHz in free-space conditions and is robust to bending and on-body placement.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:61 ,  Issue: 2 )