A CMOS Front-end for RFID Transponders Using Multiple Coil Antennas
In: Analog Integrated Circuits and Signal Processing, Jg. 83 (2015), Heft 2, S. 149-159
Online
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Zugriff:
A front-end architecture for inductive RFID transponders using multiple coil antennas for reduced ori- entation sensitivity is presented. The front-end uses multiple antennas for reception and one antenna for transmission. A select function identifies the antenna that is most favorably oriented toward the reader for transmission by comparing the DC charge-up phases of multiple DC generation blocks during power-up of the transponder. CMOS circuit design and simulation results of a front-end for 125 kHz FSK modulation are presented for a pulsed RFID system as well as an archi- tecture for cascaded DC generation. This paper also includes an example of a coil antenna for spherical transponders using three independent orthogonal windings.
Titel: |
A CMOS Front-end for RFID Transponders Using Multiple Coil Antennas
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Autor/in / Beteiligte Person: | Rabén, Hans ; Borg, Johan ; Johansson, Jonny |
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Zeitschrift: | Analog Integrated Circuits and Signal Processing, Jg. 83 (2015), Heft 2, S. 149-159 |
Veröffentlichung: | 2015 |
Medientyp: | unknown |
ISSN: | 0925-1030 (print) ; 1573-1979 (print) |
DOI: | 10.1007/s10470-015-0518-y |
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