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A frequency-reconfigurable microstrip patch antenna is implemented using a stretchable silicone TC5005 substrate. The stretchable patch is fabricated by injecting liquid metal alloy Galinstan into a square reservoir fabricated in the silicone elastomer substrate. An aperture-coupled feeding method is presented to enhance the strain by separating the fixed feed element from the stretched radiating element. The implemented prototype is demonstrated to be stretchable by a strain of up to 300% (and the material has the potential for more). The electrical length of the patch antenna varies with the stretching, and we demonstrate frequency tuning from 1.3 to 3 GHz. A maximum radiation efficiency of 80% is measured for the antenna. The fabrication process of the antenna system and experimental results for impedance and radiation pattern are presented.
Published in:
Antennas and Propagation, IEEE Transactions on
(Volume:59
,
Issue:
12
)
Date of Publication: Dec. 2011
- Page(s):
- 4406 - 4412
- ISSN :
- 0018-926X
- INSPEC Accession Number:
- 12388690
- Digital Object Identifier :
- 10.1109/TAP.2011.2165501
- Product Type:
- Journals & Magazines
- Date of Publication :
- 18 August 2011
- Date of Current Version :
- 28 November 2011
- Issue Date :
- Dec. 2011
- Sponsored by :
- IEEE Antennas and Propagation Society
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