Daniel M. Dobkin, Steven M. Weigand and Nathan Iye

Segmented Magnetic Antennas for Near-field UHF RFID

A simple loop antenna of less-than-resonant size is awkward to match and a resonant antenna contains opposing current flows and makes a poor magnetic antenna. Segmented antennas have been constructed that can operate at resonant diameters while still p...

June 14, 2007

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Conventional radiatively coupled, ultra-high frequency radio-frequency identification (UHF RFID) tags have certain limitations: they are physically large and do not operate well in or close to aqueous fluids. Recently, the use of tags configured to use inductive instead of, or as a supplement to, radiative coupling has been advanced...

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