Readers That Sense Distance - Discussion Wall

Prof. M.Sc.EE

R. Kueng, 02.18.2010 11:15:36 pm

Why you do not use the phase method?
It is possible to measure the distance by evaluating the phase of the tag response subcarrier. Transmission of 2 different reader frequencies (separated view MHz) during interrogation can deliver the distance information. Existing US frequency band is sufficient. Problematic may be the phase response of the tag backscatterer?

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Prof. M.Sc.EE R. Kueng 02.18.2010
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