Title :
Planar UHF tag antenna with bandwidth enhancement
Author :
Jui-Han Lu ; Jr-Ying Su
Author_Institution :
Dept. of Electron. Commun. Eng., Nat. Kaohsiung Marine Univ., Kaohsiung, Taiwan
Abstract :
A novel planar loop tag antenna mounted on the plastic pallets for UHF RFID system is proposed. By insetting the U-shaped slot and a pair of rectangular parasitic strips into the proposed loop tag antenna, the resonant mode close to UHF 900 MHz band is excited to enhance the operating bandwidth. The obtained impedance bandwidth across the operating band can reach about 174 MHz (18.8 %) for UHF band. Also, with bidirectional pattern, the measured reading distance is about 2.0 m as the proposed loop tag antenna mounted on the plastic pallets.
Keywords :
UHF antennas; loop antennas; planar antennas; radiofrequency identification; U-shaped slot; UHF RFID system; UHF band; bandwidth enhancement; bidirectional pattern; frequency 900 MHz; impedance bandwidth; operating bandwidth; planar UHF tag antenna; planar loop tag antenna; plastic pallets; rectangular parasitic strips; resonant mode; Antenna measurements; Bandwidth; Dipole antennas; Impedance; Radiofrequency identification; Slot antennas; UHF antennas; Loop antenna; RFID; Tag;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2012 Asia-Pacific
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4577-1330-9
Electronic_ISBN :
978-1-4577-1331-6
DOI :
10.1109/APMC.2012.6421814
