Study of UHF RFID signal propagation through complex media

Author

Fletcher, Rich ; Marti, Uttara P. ; Redemske, Rich

Author_Institution

Auto-ID Labs, MIT, Cambridge, MA

Volume

1B

fYear

2005

fDate

2005

Firstpage

747

Abstract

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

Keywords

UHF radio propagation; dielectric materials; electromagnetic wave reflection; radiofrequency identification; UHF RFID signal propagation; complex media; dielectric materials; electromagnetic propagation principles; liquid; propagation effects; quantitative approach; reflections; Dielectric losses; Dielectric materials; Electromagnetic fields; Electromagnetic propagation; Electromagnetic reflection; Material properties; Propagation losses; Radiofrequency identification; UHF propagation; Water;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2005 IEEE

Conference_Location

Washington, DC

Print_ISBN

0-7803-8883-6

Type

conf

DOI

10.1109/APS.2005.1551670

Filename

1551670