BROWSE
Detail
Journal Article
RFID Tag Antenna Coupled by Shorted Microstrip Line for Metallic Surfaces
- Issue Date
- 2008-10
- Citation
- ETRI Journal, v.30, no.4, pp.597-599
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- 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 Keywords
- Feeding structure, Metallic surfaces, Microstrip Line, Proximity-coupled, RFID Tag Antenna, Radiating Patch, Radiation Efficiency, Read range, UHF band, ceramic material, fractional impedance