CUED Publications database

A Novel Passive UHF RFID Real Time Location Sensing System

Sithamparanathan, S and Crisp, M and Penty, R and White, I A Novel Passive UHF RFID Real Time Location Sensing System. IEEE Transactions on Antennas and Propagation. (Unpublished)

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Abstract

Ubiquitous in-building Real Time Location Systems (RTLS) today are limited by costly active radio frequency identification (RFID) tags and short range portal readers of low cost passive RFID tags. We, however, present a novel technology locates RFID tags using a new approach based on (a) minimising RFID fading using antenna diversity, frequency dithering, phase dithering and narrow beam-width antennas, (b) measuring a combination of RSSI and phase shift in the coherent received tag backscatter signals and (c) being selective of use of information from the system by, applying weighting techniques to minimise error. These techniques make it possible to locate tags to an accuracy of less than one metre. This breakthrough will enable, for the first time, the low-cost tagging of items and the possibility of locating them at relatively high precision.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:16
Last Modified: 14 Apr 2014 01:03
DOI: