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RF Identification (RFID) Reader with Long Read Range in the UHF Band
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- Authors
- Jae-Young Jung, Kyu-Won Han, Chan-Won Park
- Issue Date
- 2013-08
- Citation
- Progress in Electromagnetics Research Symposium (PIERS) 2013 in Stockholm, pp.360-363
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, the design of a long read range UHF RFID reader using a novel carrier leakage suppression method is presented. We developed and demonstrated through experiment in the laboratory environment in the carrier-to-tag data ratio by more than 36 dBc in the UHF RFID band, which is consistent with our simulation results. When inserted between the reader antenna and a Class-1 RFID reader, measurements show that the reader can successfully demodulate the generated tag signal for a power level of -80 dBm, which corresponds to the backscattered power at 20 m distance. The read range of the reader with the proposed carrier leakage suppression front-end is verified again in a real environment. The measured read range is found to be greater than 20 m for a commercial battery-assisted passive (BAP) tag.
- KSP Keywords
- Carrier leakage suppression, Front-End, Long read range, Power Levels, RF identification(RFID), Reader Antenna, Real environment, Suppression method, Tag Signal(TS), UHF RFID Reader, UHF band