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학술지 Design of Reader Baseband Receiver Structure for Demodulating Backscattered Tag Signal in a Passive RFID Environment
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저자
배지훈, 최원규, 박찬원, 표철식, 김경태
발행일
201204
출처
ETRI Journal, v.34 no.2, pp.147-158
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.12.0111.0365
협약과제
10MC2900, 개별물품 단위 응용을 위한 차세대 RFID 기술 개발, 채종석
초록
In this paper, we present a demodulation structure suitable for a reader baseband receiver in a passive radio frequency identification (RFID) environment. In a passive RFID configuration, an undesirable DC-offset phenomenon may appear in the baseband of the reader receiver, which can severely degrade the performance of the extraction of valid information from the received tag signal. To eliminate this DC-offset phenomenon, the primary feature of the proposed demodulation structures for the received FM0 and Miller subcarrier signals is to reconstruct the signal corrupted by the DC-offset phenomenon by creating peak signals from the corrupted signal. It is shown that the proposed method can successfully detect valid data, even when the received baseband signal is distorted by the DC-offset phenomenon. © 2012 ETRI.
키워드
DC-offset phenomenon, Demodulation structure, ISO 18000-6C, RFID
KSP 제안 키워드
Baseband receiver, DC-offset, ISO 18000-6C, Passive RFID, Passive radio frequency identification(RFID), Radio Frequency(RF), Receiver Structure, Tag Signal(TS), baseband signal, valid data