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Institutional Repository [SANDBOX]
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/56531FA6-E4A8-4E9C-B1E1-BA581B07982B | ||
| Year | 2010 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
| License |
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| Bibliographic Citation | A. Bletsas, A.G. Dimitriou and J.N. Sahalos, "Improving Backscatter Radio Tag Efficiency", IEEE Transactions on Microwave Theory and Techniques (TMTT), vol. 58, no. 6, pp. 1502-1509, Jun. 2010. DOI: 10.1109/TMTT.2010.2047916 https://doi.org/10.1109/TMTT.2010.2047916 | ||
| Appears in Collections |
This paper studies tag properties for optimized tag-to-reader backscatter communication. The latter is exploited in RF identification (RFID) systems and utilizes binary reflection coefficient change of the tag antenna-load circuit. It is shown that amplitude maximization of complex reflection coefficient difference between the two states is not sufficient for optimized tag-to-reader backscatter communication, contrary to what is commonly believed in the field. We provide a general tag load selection methodology that applies to any tag antenna, including minimum scattering antennas as a special case. The method is based on tag antenna structural mode closed-form calculation (given three values of tag radar cross section), employs simple antenna/communication theory, and applies to both passive, as well as semipassive RFID tags.
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