Electromagnetic Effects on Radio Frequency Identification (RFID) Performance

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Authors
  1. Kouki, A.B.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);Ecole de Technologie Superieure, Montreal QUE (CAN)
Abstract
The goal of this study is to assess the impact of changes in the electromagnetic environment, particularly changes related to the position and conductivity of surrounding materials, on selected Radio Frequency Identification (RFID) systems’ performance. To this end, two different RFID tag antennas have been modeled and their electromagnetic performance was simulated in the presence of various materials situated at varying distances from the antenna. The first structure is illustrative of UHF RFID antennas, i.e., an antenna operating around 1.8 GHz, while the second is an HF antenna, operating in the 13 MHz band. Results show that both type of material used and distance at which it is placed relative to the RFID tag affect significantly the antenna’s resonance frequency. Further investigations are needed before a full understanding of the effect of adjacent (host) material, tag antenna design, frequency and gain on the performance of an RFID system is developed.

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Keywords
RFID;electromagnetic;power;modeling;simulation
Report Number
DRDC-ATLANTIC-CR-2011-070 — Contract Report
Date of publication
01 Jul 2011
Number of Pages
76
DSTKIM No
CA044727
CANDIS No
805066
Format(s):
Electronic Document(PDF)

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