THESIS
2007
v, 57 leaves : ill. ; 30 cm
Abstract
Radio frequency identification (RFID) technology has broad applicability to the automatic identification and data capture (AIDC) industry in item management. RFID technology has applications over multiple levels of the industrial, commercial and retail supply chains. These may include freight containers, returnable transport items, transport units, product packaging, product tagging....[
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Radio frequency identification (RFID) technology has broad applicability to the automatic identification and data capture (AIDC) industry in item management. RFID technology has applications over multiple levels of the industrial, commercial and retail supply chains. These may include freight containers, returnable transport items, transport units, product packaging, product tagging.
The performance characteristics of the antennas in RFID systems and in particular the RFID tag may vary drastically due to application factors as well as the particular RF air interface (frequency, modulation, etc.) being supported. Of key concern is the matching of the various performance antenna characteristics to the user application.
In this thesis, four different types of RFID tag antenna designs are proposed and investigated. They have different antenna gain, bandwidth, size and potential applications. The antenna characteristics are demonstrated by simulations. Experimental results are also included and these include their pattern, impedance as well as its operation when attached to an actual tag chip. Additionally the effect of various backing materials on the antennas performance is also characterized.
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