Compact near-field folded-loop antenna for UHF RFID handheld reader

Author

Ming-Jui Chang ; Hua-Ming Chen

Author_Institution

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

fYear

2014

fDate

2-5 Dec. 2014

Firstpage

107

Lastpage

108

Abstract

A compact folded-loop antenna is proposed for near-field operations in the ultra-high frequency (UHF) band, which can be generated a strong and uniform magnetic field in a near-field zone of the folded-loop. The folded-loop with a one-wavelength perimeter is printed on the same side of FR4 substrate. The fabricated compact antenna with an overall size of a dimension of 50 × 50 × 0.8 mm³, achieves a reading zone of 30 × 30 mm² with good impedance matching and uniform magnetic field distribution over the bandwidth of 919-932 MHz. The proposed antenna is suitable for handheld radio frequency identification (RFID) reader applications.

Keywords

UHF antennas; loop antennas; magnetic fields; radiofrequency identification; FR4 substrate; UHF RFID handheld reader; compact near-field folded-loop antenna; handheld radio frequency identification reader; impedance matching; one-wavelength perimeter; ultra-high frequency band; uniform magnetic field distribution; Antenna measurements; Couplings; Magnetic field measurement; Magnetic fields; Radiofrequency identification; UHF antennas; Folded-loop antenna; Handheld reader; Near-field coupling; UHF RFID;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (ISAP), 2014 International Symposium on

Conference_Location

Kaohsiung

Type

conf

DOI

10.1109/ISANP.2014.7026553

Filename

7026553