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학술지 RFID Tag Antenna Coupled by Shorted Microstrip Line for Metallic Surfaces
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저자
최원규, 김정석, 배지훈, 최길영, 표철식, 채종석
발행일
200808
출처
ETRI Journal, v.30 no.4, pp.597-599
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.08.0208.0063
협약과제
07MD1600, RFID 시스템 고도화 기술개발, 최길영
초록
This letter presents the design of a small and low-profile RFID tag antenna in the UHF band that can be mounted on metallic objects. The designed tag antenna, which uses a ceramic material as a substrate, consists of a radiating patch and a microstrip line with two shorting pins for a proximity-coupled feeding structure. Using this structure, impedance matching can be simply obtained between the antenna and tag chip without a matching network The fractional impedance bandwidth for S11<3 dB and radiation efficiency are about 1.4% and 56% at 911 MHz, respectively. The read range is approximately from 5 m to 6 m when the tag antenna is mounted on a metallic surface.
KSP 제안 키워드
Feeding structure, Metallic surfaces, Microstrip Line, Proximity-coupled, RFID Tag Antenna, Radiating Patch, Radiation Efficiency, Read range, UHF band, ceramic material, fractional impedance