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A Millimeter-Wave Inflatable Frequency-Agile Elastomeric Antenna

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6 Author(s)
Hage-Ali, S. ; Joint Int. Lab. LEMAC, Univ. des Sci. et Technol. de Lille, Villeneuve-d''Ascq, France ; Tiercelin, N. ; Coquet, P. ; Sauleau, R.
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This letter reports a millimeter-wave frequency-agile microstrip antenna printed on an ultrasoft elastomeric polydimethylsiloxane (PDMS) substrate. The microstrip patch antenna is supported by a PDMS membrane suspended over an air cavity. The distance H between the patch and the ground plane, and thus the resonant frequency of the antenna, are tuned using pneumatic actuation, taking advantage of the extreme softness of the PDMS membrane. A continuous frequency shift varying from 55.35 to 51 GHz (≈8%) has been obtained for a tuning range of H between 200 and 575 μm. In all configurations, the antenna remains matched and its radiation characteristics are very satisfactory.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:9 )