상세정보
학술지
Design of Reader Baseband Receiver Structure for Demodulating Backscattered Tag Signal in a Passive RFID Environment
- 발행일
- 201204
- 출처
- ETRI Journal, v.34 no.2, pp.147-158
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 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.
- KSP 제안 키워드
- Baseband receiver, DC-offset, Passive RFID, Passive radio frequency identification(RFID), Radio Frequency(RF), Receiver Structure, Tag Signal(TS), baseband signal, valid data