System modeling of the RFID contactless inductive coupling using 13.56 MHz loop antennas

Author

Mourad, O. ; Le Thuc, Philippe ; Staraj, Robert ; Iliev, Plamen

Author_Institution

Lab. d´Electron., Antennes et Telecommun., Univ. of Nice-Sophia Antipolis, Sophia Antipolis, France

fYear

2014

fDate

6-11 April 2014

Firstpage

2034

Lastpage

2038

Abstract

This paper presents a novel model of the inductive coupling using loop antennas and occuring in HF-RFID or NFC systems. It takes into account the coupling coefficient, the chip/antenna matching and the characteristics of the two resonant circuits (the transmitter and the receiver) constituting an NFC system. The model shows that maximum coupling between reader and tag antennas and conjugate impedance matching between the antenna and the chip are not always the best choices for a reliable transmission in the desired operating area.

Keywords

impedance matching; loop antennas; near-field communication; radiofrequency identification; HF-RFID systems; NFC system; RFID contactless inductive coupling; chip-antenna matching; conjugate impedance matching; frequency 13.56 MHz; loop antennas; near-field contactless RFID; radio frequency identification; resonant circuits; tag antennas; transmission reliability; Antenna measurements; Coils; Couplings; Spirals; Transmitting antennas; Inductive Coupling; Loop Antennas; Magnetic Fields; Quality factor; RFID; Resonant Circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EuCAP), 2014 8th European Conference on

Conference_Location

The Hague

Type

conf

DOI

10.1109/EuCAP.2014.6902206

Filename

6902206