Title :
Investigation of RF cable effect on RFID tag antenna impedance measurement
Author :
Leong, Kin Seong ; Ng, Mun Leng ; Cole, Peter H.
Author_Institution :
Adelaide Univ., Adelaide
Abstract :
The performance of a passive radio frequency identification (RFID) tag depends on the antenna, the chip efficiency of the tag, and also on the matching between the antenna and the chip. The design of the tag antenna often involves the measurement of its impedance. There is no literature which explicitly discusses the measuring methods of the performance of an RFID tag antenna. The closest literature on the measurement of small antennas is either antenna on a mobile handset, mobile radio or antenna in a 50 Omega system. This paper investigates the RF cable effect on the measurement of the RFID tag antenna impedance. Measurement results obtained through several different RF cables are compared with simulation results. Discussions on minimizing measurement error and on how measurement of antenna impedance can assist the design of tag antenna are presented.
Keywords :
bow-tie antennas; electric impedance measurement; radiofrequency identification; RF cable effect; RFID tag antenna; bow tie antenna; impedance measurement; measurement error; passive radio frequency identification tag; small antennas; Antenna measurements; Cables; Impedance measurement; Land mobile radio; Mobile antennas; Mobile handsets; RFID tags; Radio frequency; Radiofrequency identification; Semiconductor device measurement;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4395558
