Study of UHF RFID signal propagation through complex media

This paper shows how the propagation effects encountered in commercial RFID systems can all explained and predicted from fundamental electromagnetic propagation principles. The paper also shows that consideration of reflections and product dimensions are important for liquid and dielectric materials...

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Bibliographic Details
Main Authors: Fletcher, R., Marti, U.P., Redemske, R.
Format: Conference Proceeding
Language:English
Subjects:
Dielectric losses
Dielectric materials
Electromagnetic fields
Electromagnetic propagation
Electromagnetic reflection
Material properties
Propagation losses
Radiofrequency identification
UHF propagation
Water
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Description
Summary:This paper shows how the propagation effects encountered in commercial RFID systems can all explained and predicted from fundamental electromagnetic propagation principles. The paper also shows that consideration of reflections and product dimensions are important for liquid and dielectric materials as well since much of the power loss occurs at the interface between air and the medium. The quantitative approach outlined in this paper can have an important impact on understanding the behavior of UHF RFID systems and optimizing performance
ISSN:1522-3965
1947-1491
DOI:10.1109/APS.2005.1551670