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Influence of the Non-Linear UHF-RFID IC Impedance on the Backscatter Abilities of a T-Match Tag Antenna Design.
- Source :
- IEEE Transactions on Magnetics; Feb2012, Vol. 48 Issue 2, p755-758, 4p
- Publication Year :
- 2012
-
Abstract
- In ultra-high-frequency radio-frequency-identification (UHF-RFID) the conjugate complex matching of the packaged UHF-RFID transponder IC and the tag antenna structure is important to increase the reading range of the transponder tag. Quite often half-wavelength dipole-like antenna structures are used. Due to the fact that the impedances of the packaged IC and the dipole antenna structure are in different domains, a matching structure is needed to accomplish the conjugate complex matching. A common technique to carry out the matching is the so called T-match. Since the nominal input impedance of the IC depends on the applied antenna voltage (and in a strongly non-linear way), the backscatter abilities of the tag are also functions of the applied voltage. In the present work those dependencies are investigated in terms of full-wave finite element simulations and measurements. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00189464
- Volume :
- 48
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Magnetics
- Publication Type :
- Academic Journal
- Accession number :
- 71538716
- Full Text :
- https://doi.org/10.1109/TMAG.2011.2174971