Demonstration of improved passive UHF RFID coverage using optically-fed distributed multi-antenna system

Sithamparanathan Sabesan; Michael Crisp; Richard V. Penty; Ian H. White

doi:10.1109/RFID.2009.4911173

Demonstration of improved passive UHF RFID coverage using optically-fed distributed multi-antenna system

Sithamparanathan Sabesan, Michael Crisp, Richard V. Penty, Ian H. White

Vice Chancellor's Office

University of Cambridge

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

19 Citations (SciVal)

Abstract

Optically-fed distributed antenna system (DAS) technology is combined with passive ultra high frequency (UHF) radio frequency identification (RFID). It is shown that RFID signals can be carried on directly modulated radio over fiber links without impacting their performance. It is also shown that a multi-antenna DAS can greatly reduce the number of nulls experienced by RFID in a complex radio environment, increasing the likelihood of successful tag detection. Consequently, optimization of the DAS reduces nulls further. We demonstrate RFID tag reading using a three antenna DAS system over a 20mx6m area, limited by building constraints, where 100% of the test points can be successfully read. The detected signal strength from the tag is also observed to increase by an average of approximately lOdB compared with a conventional switched multi-antenna RFID system. This improvement is achieved at +31dBm equivalent isotropically radiated power (EIRP) from all three antenna units (AUs).

Original language	English
Title of host publication	2009 IEEE International Conference on RFID, RFID 2009
Place of Publication	U. S. A.
Publisher	IEEE
Pages	217-224
Number of pages	8
ISBN (Print)	9781424433377
DOIs	https://doi.org/10.1109/RFID.2009.4911173
Publication status	Published - 25 Sept 2009
Event	2009 IEEE International Conference on RFID, RFID 2009 - Orlando, FL, USA United States Duration: 27 Apr 2009 → 28 Apr 2009

Conference

Conference	2009 IEEE International Conference on RFID, RFID 2009
Country/Territory	USA United States
City	Orlando, FL
Period	27/04/09 → 28/04/09

Keywords

Coverage
Distributed antenna system (DAS)
Nulls
Passive ultra high frequency (UHF) radio frequency identification (RFID)
Radio over fiber

ASJC Scopus subject areas

Computer Networks and Communications
Information Systems
Electrical and Electronic Engineering

Access to Document

10.1109/RFID.2009.4911173

Cite this

Demonstration of improved passive UHF RFID coverage using optically-fed distributed multi-antenna system. / Sabesan, Sithamparanathan; Crisp, Michael; Penty, Richard V. et al.
2009 IEEE International Conference on RFID, RFID 2009. U. S. A.: IEEE, 2009. p. 217-224 4911173.

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Sabesan, S, Crisp, M, Penty, RV & White, IH 2009, Demonstration of improved passive UHF RFID coverage using optically-fed distributed multi-antenna system. in 2009 IEEE International Conference on RFID, RFID 2009., 4911173, IEEE, U. S. A., pp. 217-224, 2009 IEEE International Conference on RFID, RFID 2009, Orlando, FL, USA United States, 27/04/09. https://doi.org/10.1109/RFID.2009.4911173

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keywords = "Coverage, Distributed antenna system (DAS), Nulls, Passive ultra high frequency (UHF) radio frequency identification (RFID), Radio over fiber",

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Demonstration of improved passive UHF RFID coverage using optically-fed distributed multi-antenna system

Abstract

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Keywords

ASJC Scopus subject areas

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