(A) sampling-based ASK demodulator for HF multi-standard RFID reader = 다양한 HF 대역 RFID 표준을 만족하는 판독기를 위한 자가 표본화 ASK 복조기

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A novel sampling-based amplitude shift keying (ASK) demodulator for high frequency (HF) multi-standard radio frequency identification (RFID) reader is proposed. The proposed ASK demodulator consists of a half-wave rectifier, a voltage inverter, a Schmitt trigger for differentiation of signal, another Schmitt trigger for self-generation clock, and a rising edge-triggering D flip-flop. In order to prevent transition time or drop time of the envelope detected signal increasing due to envelope detection of capacitance and resistance, the proposed ASK demodulator differentiates data state of the received response signal by using hysteresis range of the Schmitt trigger for signal, without envelope detection. A required clock for edge-triggering of the D flip-flop is generated from the received response signal by using another Schmitt trigger for clock. This prevents clock synchronization problem between the differentiated signal and clock for edge-triggering of the D flip-flop. The proposed ASK demodulator is applied to a HF multi-standard RFID transceiver to verify its performance. The proposed transceiver is implemented in a TSMC 0.18 um CMOS technology and measurement results indicate that the proposed ASK demodulator reliably operates.
Advisors
Yoo, Hyung-Jounresearcher유형준researcher
Description
한국과학기술원 : 전기 및 전자공학과,
Publisher
한국과학기술원
Issue Date
2011
Identifier
467851/325007  / 020084304
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기 및 전자공학과, 2011.2, [ vi, 48 p. ]

Keywords

RFID transceiver; 13.56 MHz; sampling-based; ASK demodulator; multi-standard; 다중 표준; RFID 송수신기; 13.56 MHz; 자가 표본화; ASK 복조기

URI
http://hdl.handle.net/10203/36755
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=467851&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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