A UHF Near-Field RFID System With Fully Integrated Transponder

This paper presents an RF identification (RFID) system with a fully integrated transponder. To enable the on-chip integration of the tag's antenna, it is suggested to employ near-field coupling at high-frequency ranges, i.e., the UHF band. The RFID system including the reader and key blocks of...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2008-05, Vol.56 (5), p.1267-1277
Main Authors: Shameli, A., Safarian, A., Rofougaran, A., Rofougaran, M., Castaneda, J., De Flaviis, F.
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Coils
Communication system security
Costs
Coupling circuits
Data security
Design. Technologies. Operation analysis. Testing
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Inductive coupling
Integrated circuits
Microwaves
near-field communication
Power system security
Printed circuits
Radio frequency
Radio frequency identification
Radiocommunications
Radiofrequency identification
Radiolocalization and radionavigation
reader
Readers
RF identification (RFID) system
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
System-on-a-chip
Telecommunications
Telecommunications and information theory
transponder
Transponders
UHF
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Summary:This paper presents an RF identification (RFID) system with a fully integrated transponder. To enable the on-chip integration of the tag's antenna, it is suggested to employ near-field coupling at high-frequency ranges, i.e., the UHF band. The RFID system including the reader and key blocks of the transponder is designed and fabricated in a standard CMOS 0.18-mum process. The system operates at 900 MHz with the coverage range of over 0.4 cm. The tag's antenna is integrated on-chip without using any special process. The reader employs multiple coils to increase its coverage area. Using a proper output network, the reader can deliver a current of 225 mA (rms) to its coil, which is designed on a printed circuit board.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2008.920182