Title :
Influence of Multiantenna Tag on the Read Range of a Passive UHF RFID System
Author :
Seigneuret, Gary ; Bergeret, Emmanuel ; Moreaux, Christophe ; Deleruyelle, Thibaut ; Pannier, Philippe
Author_Institution :
STMicroelectron. Rousset, Rousset, France
fDate :
7/3/1905 12:00:00 AM
Abstract :
This letter aims to study a multiantenna tag on a UHF RFID system. Impact of dual antenna on the read range is demonstrated. This letter shows that this enhancement is not only due to a better antenna gain, but also to the design of the backscattering system. Indeed, the backscattering modulator is connected on only one of the two inputs of the antenna. Measurements of prototypes designed in 0.18 CMOS process demonstrate that a tag with such a system stays visible for the reader around 2 m better than a one-antenna system.
Keywords :
UHF antennas; radiofrequency identification; antenna gain; backscattering modulator; backscattering system; dual antenna; multiantenna tag; one-antenna system; passive UHF RFID system; read range; Antenna measurements; Backscatter; Dipole antennas; Modulation; Power generation; Rectifiers; Semiconductor device measurement; Antenna; passive radio frequency identification (RFID); read range; rectifiers;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2172177
