Title :
Circularly polarized compact passive RFID tag antenna
Author :
Mirza, Hidayath ; Ahmed, Mohd Imran ; Elahi, Mohammad Fazleh
Author_Institution :
Kyung Hee Univ., Suwon
Abstract :
This paper presents a compact (35times36.5 mm) RFID tag antenna which has large RCS patterns and easy conjugate impedance matching property by use of an inductively-coupled feeding. Its simulated maximum (match state) and minimum (short state) RCS are -15.36 dBm2 and -22.0 dBm2, with a difference of 6.69 dB between the two states. We have also calculated the detection distance of the tag for different values of reader antenna gain.
Keywords :
antenna feeds; antenna radiation patterns; impedance matching; radar cross-sections; radiofrequency identification; RCS patterns; circularly polarized compact passive RFID tag antenna; compact RFID tag antenna; conjugate impedance matching property; detection distance; inductively-coupled feeding; reader antenna gain; Antenna feeds; Antenna theory; Application specific integrated circuits; Dipole antennas; Impedance; Passive RFID tags; Polarization; RFID tags; Radiofrequency identification; Transmitting antennas; Chip sensitivity; Inductively-Coupled and RFID chip; RFID chip; Radar Cross Section (RCS);
Conference_Titel :
Electrical and Computer Engineering, 2008. ICECE 2008. International Conference on
Conference_Location :
Dhaka
Print_ISBN :
978-1-4244-2014-8
Electronic_ISBN :
978-1-4244-2015-5
DOI :
10.1109/ICECE.2008.4769311
