DocumentCode
2726507
Title
Automatic impedance matching for 13.56 MHz NFC antennas
Author
Roland, Michael ; Witschnig, Harald ; Merlin, E. ; Saminger, Christian
Author_Institution
Upper Austria Univ. of Appl. Sci., Hagenberg
fYear
2008
fDate
25-25 July 2008
Firstpage
288
Lastpage
291
Abstract
This paper deals with the concept, the implementation and the verification of an automatic impedance matching circuit for NFC antennas with a frequency of 13.56 MHz. Besides an introduction to manual tuning and its issues, the fundamental components of an automatic tuning system are outlined. A lab-scaled prototype is built and demonstrated. In the end, the successful operation of this system is tested with several different antennas.
Keywords
HF antennas; impedance matching; automatic impedance matching; frequency 13.56 MHz; manual tuning; near field communication antennas; Antenna accessories; Circuit optimization; Current supplies; Impedance matching; Radio frequency; Radio transmitters; Radiofrequency identification; Shape measurement; Transmitting antennas; Tuning;
fLanguage
English
Publisher
ieee
Conference_Titel
Communication Systems, Networks and Digital Signal Processing, 2008. CNSDSP 2008. 6th International Symposium on
Conference_Location
Graz
Print_ISBN
978-1-4244-1875-6
Electronic_ISBN
978-1-4244-1876-3
Type
conf
DOI
10.1109/CSNDSP.2008.4610705
Filename
4610705
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