Design of an UHF passive RFID tag antenna for a plastic lid = 플라스틱 마개 부착용 UHF 대역 수동형 RFID 태그 안테나 설계

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Passive RFID tag, which has not battery, receives the power for it’s activation from the reader antenna only. In this system, when a tag is attached at the surface of the liquid product having high permittivity, read range is short significantly for decreasing the supplied power to the tag antenna caused by the attached material. A theoretical analysis of degrading parameters for a tag antenna due to the attached material is presented and compared with measured values. From this result, an estimation method of maximum read range is presented at the position located on a tag. And the passive RFID tag antenna, which has the helical structure and read range of maximum 1.7m, is suggested. It is suited to attach the plastic lid. And it has the specifications which are -5dB frequency bandwidth of 2.3MHz(resonate frequency at 912MHz) and the fabricated size of radius of 1.5cm, height of 0.8cm and directional radiation pattern. The supposed structure can be applied in Europe, Japan, and Korea adopting the narrow bandwidth.
Advisors
Myung, Noh-Hoonresearcher명로훈researcher
Description
한국과학기술원 : 전기및전자공학전공,
Publisher
한국과학기술원
Issue Date
2006
Identifier
301328/325007  / 020043639
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학전공, 2006.2, [ vi, 50 p. ]

Keywords

radio frequency identification; RFID tag antenna; plastic lid; 전파식별; 태그 안테나; 플라스틱 마개; radio frequency identification; RFID tag antenna; plastic lid; 전파식별; 태그 안테나; 플라스틱 마개

URI
http://hdl.handle.net/10203/38633
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=301328&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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