Planar metallic tag antenna for UHF RFID system

Author

Jui-Han Lu ; Gao-Ting Zheng

Author_Institution

Dept. of Electron. Commun. Eng., Nat. Kaohsiung Marine Univ., Kaohsiung, Taiwan

fYear

2012

fDate

4-7 Dec. 2012

Firstpage

1013

Lastpage

1015

Abstract

A novel broadband design of planar tag antenna mounted on the metallic objects for UHF RFID system is proposed. We derive a new resonant mode that is excited with frequency shifting to enhance the operating bandwidth for broadband operation by employing the shorting pins posted at the corner of the proposed tag antenna. The obtained impedance bandwidth across the operating band can reach about 112 MHz (12.5 %) for UHF band, which is from 850 to 962 MHz. Also, with unidirectional pattern, the measured reading distance is about 5.2 m as the proposed tag antenna mounted on the metallic object.

Keywords

UHF antennas; antenna radiation patterns; broadband antennas; planar antennas; radiofrequency identification; UHF RFID system; broadband design; broadband operation; frequency 850 MHz to 962 MHz; frequency shifting; impedance bandwidth; metallic objects; planar metallic tag antenna; resonant mode; shorting pins; unidirectional pattern; Antenna measurements; Broadband antennas; Broadband communication; Dipole antennas; Impedance; Radiofrequency identification; UHF antennas; Broadband; RFID; Tag;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APMC.2012.6421809

Filename

6421809