Novel omnidirectional polarized tag antenna for UHF RFID applications

Author

Wei-Chih Chen ; Hua-Ming Chen ; Yi-Fang Lin ; Shu-An Yeh

Author_Institution

Inst. of Photonics & Commun., Nat. Kaohsiung Univ. of Appl. Sci., Kaohsiung, Taiwan

fYear

2012

fDate

4-7 Dec. 2012

Firstpage

49

Lastpage

51

Abstract

An UHF RFID tag antenna which is comprised of a trapezoidal loop and a dual-dipole radiator with an L-slit for omnidirectional polarized reading patterns is designed, fabricated and measured. For a conjugate match to the Monza3 microchip impedance of 44 - j231 at 915 MHz, an orthogonal dual-dipole tag antenna (91 mm × 91 mm) with L-slit on each dipole arm was designed. The read range of the prototype attached on a different glass can reach more than 9 m, which has been tested for an RFID reader with 4.0 W of EIRP.

Keywords

UHF antennas; dipole antennas; omnidirectional antennas; radiofrequency identification; L-slit; Monza3 microchip impedance; RFID reader; UHF RFID tag antenna; conjugate match; dipole arm; dual-dipole radiator; frequency 915 MHz; omnidirectional polarized reading patterns; omnidirectional polarized tag antenna; orthogonal dual-dipole tag antenna; power 4.0 W; trapezoidal loop; Antenna measurements; Antenna radiation patterns; Dipole antennas; Frequency measurement; Impedance; Impedance measurement; Radiofrequency identification; Dual-dipole antenna; omnidirectional polarization; orientation radiation pattern; safety glass;

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.2012.6421494

Filename

6421494