A Compact RFID Reader Antenna for UHF Near-Field and Far-Field Operations

A Compact RFID Reader Antenna for UHF Near-Field and Far-Field Operations

A compact loop antenna is presented for mobile ultrahigh frequency (UHF) radio frequency identification (RFID) application. This antenna, printed on a 0.8 mm thick FR4 substrate with a small size of 31 mm × 31 mm, achieves good impedance bandwidth from 897 to 928 MHz, which covers USA RFID Band (902...

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Bibliographic Details
Published in:International journal of antennas and propagation Vol. 2013; no. 2013; pp. 1 - 5
Main Authors: Xiao zheng, Lai, Zeming, Xie, Xuanliang, Cen
Format: Journal Article
Language:English
Published: Cairo, Egypt Hindawi Puplishing Corporation 01-01-2013
Hindawi Publishing Corporation
Hindawi Limited
Subjects:
Antennas
Gain
Loop antennas
Magnetic fields
Radio frequency identification
Readers
Resonators
UHF
Online Access:Get full text
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Description
Summary:A compact loop antenna is presented for mobile ultrahigh frequency (UHF) radio frequency identification (RFID) application. This antenna, printed on a 0.8 mm thick FR4 substrate with a small size of 31 mm × 31 mm, achieves good impedance bandwidth from 897 to 928 MHz, which covers USA RFID Band (902–928 MHz). The proposed loop configuration, with a split-ring resonator (SRR) coupled inside it, demonstrates strong and uniform magnetic field distribution in the near-field antenna region. Its linearly polarized radiation pattern provides available far-field gain. Finally, the reading capabilities of antenna are up to 56 mm for near-field and 1.05 m for far-field UHF RFID operations, respectively.
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ISSN:1687-5869
1687-5877
DOI:10.1155/2013/961042