Design and Implementation of ultra-low power, UHF RFID tag chip integrated with sensors for wireless environmental monitoring = 무선 환경 감지를 위한 센서들을 집적시킨 저 전력, 고주파 대역 RFID 태그 칩의 설계 및 구현

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A RF-powered transponder with temperature and photo sensors is designed for environmental monitoring. The transponder gathers its operating power from external ISM (860 - 960MHz) band RF signal and senses ambient temperature and light intensity. The power-efficient and robust clock generator which consists of the temperature compensated ring oscillator and the oversampling synchronizer is proposed. The single slope ADC utilized in the integrated sensors can reduce their power and area overheads efficiently. The internal clock frequency has variation less than 7% for 1.5-V supply voltage and 90℃ temperature changes. The proposed transponder can operate up to 3.4-m from the base station in the 2-W transmit power and the total power consumption is only 5.1-㎼ during active state. The transponder is fabricated in $0.25-㎛ CMOS process and occupies 0.4-㎟.
Advisors
Yoo, Hoi-Junresearcher유회준researcher
Description
한국과학기술원 : 전기및전자공학전공,
Publisher
한국과학기술원
Issue Date
2006
Identifier
255533/325007  / 020043565
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학전공, 2006.2, [ v, 41 p. ]

Keywords

Temperature sensor; Photo sensor; RFID; Wireless environmental monitoring; 무선 환경 감지; 온도 센서; 광 센서; 무선인식

URI
http://hdl.handle.net/10203/38364
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=255533&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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