Title :
Dynamic impedance measurement of UHF passive RFID tags for sensitivity estimation
Author :
Yojima, Hiroyuki ; Tanaka, Yu ; Umeda, Yohtaro ; Takyu, Osamu ; Nakayama, Machiko ; Kodama, Kazunari
Author_Institution :
Tokyo Univ. of Sci., Tokyo, Japan
Abstract :
This paper proposes the way to measure two impedances when a tag is operating. It also proposes to quantify the change of received power when the distance between passive UHF RFID tags become close each other. We constructed the system to measure the tag IC impedance in operation and calculate the reader and tag´s change of received power according to the tag IC impedance´s change due to the closeness of the tags.
Keywords :
UHF devices; integrated circuits; radiofrequency identification; IC impedance; UHF passive RFID tags; dynamic impedance measurement; sensitivity estimation; Antenna measurements; Impedance; Impedance measurement; Integrated circuit modeling; Modulation; UHF measurements;
Conference_Titel :
Communications and Information Technologies (ISCIT), 2010 International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-7007-5
Electronic_ISBN :
978-1-4244-7009-9
DOI :
10.1109/ISCIT.2010.5664865
