Impact of human presence on the read zones of passive UHF RFID systems Online publication date: Tue, 24-Feb-2009
by Darmindra D. Arumugam, Ananyaa Gautham, Gaurov Narayanaswamy, Nikhil Ayer, Daniel W. Engels
International Journal of Radio Frequency Identification Technology and Applications (IJRFITA), Vol. 2, No. 1/2, 2009
Abstract: In this paper, we study the impact of human presence on the read zones of passive UHF RFID systems using the finite-element method (FEM) with a full length model of a homogeneous human body, consisting of 8 mm tetrahedrals and a total of 334,733 tetrahedrals. The study presented analyses UHF RFID systems operating in the FCC allowed band of 902 MHz to 928 MHz with a typical 7.4 dB gain RFID reader patch antenna located at 0°, 45° and 90° angles in the front, back, top and side of the human body. This paper presents evidence for the first time that allows a visualisation of the deformation of the RFID reader antenna read zones when in the presence of a human body and derives theory using modelling techniques from experimental as well as simulation results.
Online publication date: Tue, 24-Feb-2009
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