Impedance matching concepts in RFID transponder design

Author

Rao, K.V.S. ; Nikitin, Pavel V. ; Lam, Sander F.

Author_Institution

Intermec Technol. Corp., Everett, WA, USA

fYear

2005

fDate

17-18 Oct. 2005

Firstpage

39

Lastpage

42

Abstract

In this paper, we analyze impedance matching concepts in passive radio frequency identification (RFID) transponders, which are powered by the incoming RF energy and consist of an antenna and an integrated circuit chip, both with complex impedances. The impedance match between the chip and the antenna can be characterized by the power transmission coefficient. We analyze the behavior of the power transmission coefficient and the effect it has on the tag performance. As an example, we consider a specific RFID transponder design, an Intellitag ID card with embedded folded meander antenna operating in 915 MHz band. We present both measurement data and simulation results, which are in good agreement.

Keywords

UHF antennas; UHF integrated circuits; impedance matching; integrated circuit design; radiofrequency identification; transponders; 915 MHz; Intellitag ID card; RF energy; embedded folded meander antenna; impedance matching concept; integrated circuit chip; passive RFID transponder design; power transmission coefficient; radio frequency identification; Impedance matching; Integrated circuit technology; Performance analysis; Power transmission; RFID tags; Radio frequency; Radiofrequency identification; Transmitting antennas; Transponders; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Automatic Identification Advanced Technologies, 2005. Fourth IEEE Workshop on

Print_ISBN

0-7695-2475-3

Type

conf

DOI

10.1109/AUTOID.2005.35

Filename

1544398