I need a chronogram showing RF signal in time—for example, kept by a spectrum analyzer in zero span. What I am looking for is the time duration of different steps of the dialog between reader and tag. For example: a reader to send a command (x ms) and a reader in pure carrier to feed and support tag backscattering (y ms).
This is not the kind of information we have. I would suggest that you reach out to some of the RFID research labs around the world. You can find a list of some labs by visiting the Global RF Lab Alliance Web site. Click on “Members,” and you will find a list of laboratories in Asia, Europe and the United States. You could also try the Auto-ID Labs, a group of research labs focused specifically on passive ultrahigh-frequency (UHF) RFID technology based on the Electronic Product Code (EPC) standards.
—Mark Roberti, Founder and Editor, RFID Journal
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