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학술지 A Novel Carrier Leakage Suppression Front-End for UHF RFID Reader
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저자
정재영, 박찬원, 엄경환
발행일
201205
출처
IEEE Transactions on Microwave Theory and Techniques, v.60 no.5, pp.1468-1477
ISSN
0018-9480
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TMTT.2012.2187675
협약과제
11MC2500, 개별물품 단위 응용을 위한 차세대 RFID 기술 개발, 채종석
초록
In this paper, a novel carrier leakage suppression (CLS) front-end for UHF RF identification (RFID) reader is presented. We demonstrated through experiment in the laboratory environment that the proposed CLS front-end has a significant improvement in the carrier-to-data ratio by more than 36 dBc in the UHF RFID frequency band. When inserted between the 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 CLS front-end is verified again in an indoor environment. The measured read range is found to be about 23 m for a commercial battery-assisted passive (BAP) tag. We showed that a Class-3 RFID system for a long read range of 20 m can be successfully established with BAP tags and the Class-1 reader with the proposed CLS front-end. © 2012 IEEE.
키워드
Carrier leakage suppression (CLS), limiter, RF identification (RFID), RFID reader
KSP 제안 키워드
Carrier leakage suppression, Front-End, Indoor Environment, Long read range, Power Levels, RF identification(RFID), RFID system, Tag Signal(TS), UHF RFID Reader, backscattered power, frequency band