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Low Profile Tunable Dipole Antenna Using BST Varactors for Biomedical ApplicationsIn this paper a 2.4 GHz low profile (lambda/47) tunable dipole antenna is evaluated in the presence of a human core model (HCM) body phantom. The antenna uses a frequency selective surface (FSS) with interdigital barium strontium titanate (BST) varactor-tuned unit cells and its performance is compared to a similar low profile antenna that uses an FSS with semiconductor varactor diodes. The measured data of the antenna demonstrate tunability from 2.2 GHz to 2.55 GHz in free space and impedance match improvement in the presence of a HCM at different distances. This antenna has smaller size, lower cost and less weight compared to the semiconductor varactor diode counterpart.
Document ID
20140010642
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Cure, David (University of South Florida Tampa, FL, United States)
Weller, Thomas M. (University of South Florida Tampa, FL, United States)
Miranda, Felix A. (NASA Glenn Research Center Cleveland, OH, United States)
Price, Tony (INTEL Corp. Chandler, AZ, United States)
Date Acquired
August 13, 2014
Publication Date
July 7, 2013
Subject Category
Communications And Radar
Report/Patent Number
GRC-E-DAA-TN7465
Meeting Information
Meeting: 2013 IEEE International Symposium on Antennas and Propagation
Location: Lake Buena Vista, FL
Country: United States
Start Date: July 7, 2013
End Date: July 13, 2013
Sponsors: Institute of Electrical and Electronics Engineers
Funding Number(s)
WBS: WBS 432938.11.01.03.02.02.15
CONTRACT_GRANT: NNX10AL41H
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
frequency selective surfaces
Low Profile antenna
BST Varactors

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