CST – Computer Simulation Technology

RFID Smart Shelf With Confined Detection Volume at UHF

Title:
RFID Smart Shelf With Confined Detection Volume at UHF
Author(s):
Carla R. Medeiros, Jorge R. Costa, Carlos A. Fernandes
Source:
IEEE Antennas and Wireless Propagation Letters
Vol./Issue/Date:
Volume: 7, 2008
Year:
2008
Page(s):
773-776
Keywords:
Microstrip antennas, near fields, radio frequency identification (RFID), reader antenna, smart shelf
Abstract:
This letter presents a smart shelf configuration for radio frequency identification (RFID) application. The proposed shelf has an embedded leaking microstrip transmission line with extended ground plane. This structure, when connected to an RFID reader, allows detecting tagged objects in close proximity with proper field confinement to avoid undesired reading of neighboring shelves. The working frequency band covers simultaneously the three world assigned RFID subbands at ultrahigh frequency (UHF). The concept is explored by full-wave simulations and it is validated with thorough experimental tests.
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