Please use this identifier to cite or link to this item:
Title: Near-field UHF RFID reader antenna design
Keywords: antenna, loop antenna, near-field antenna, RFID, reader antenna, UHF
Issue Date: 19-Aug-2009
Citation: GOH CHEAN KHAN (2009-08-19). Near-field UHF RFID reader antenna design. ScholarBank@NUS Repository.
Abstract: The objective of this work is to design near-field UHF RFID reader antennas with wide coverage areas and long detection distances. In this thesis, three designs of near-field UHF RFID reader antenna are presented. A top-to-bottom coupled segmented loop antenna, a side-by-side coupled segmented loop antenna, and a loop antenna with phase shifters are proposed. Segmented line structures are introduced to keep the current flowing on the electrically large antenna in phase. Phase shifters are proposed to provide a 180 degree phase shift to the phase-inversed current so that the current flowing on the electrically large antenna is kept in a single direction. These antennas, with electrical sizes larger than at least one operating wavelength, produce strong and even magnetic field distribution over the near-field interrogation zones. Compared to conventional solid loop antennas of similar interrogation zones, the proposed antennas are shown to afford wider coverage areas and longer RFID tag detection distances.
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
GohCK.pdf3.69 MBAdobe PDF



Page view(s)

checked on May 22, 2019


checked on May 22, 2019

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.