Position tracking of passive resonance-based transponders

Details Position tracking of passive resonance-based transponders Position tracking of passive resonance-based transponders

G - Physics

01

V

G01V 3/08 (2006.01) A61B 5/06 (2006.01) A61B 19/00 (2006.01) G01V 3/10 (2006.01) H04B 1/59 (2006.01)

Patent

CA 2588537

A system for position tracking includes one or more field generators, which are arranged to generate one or more respective position-varying magnetic fields. A transponder includes a resonant circuit having a resonance frequency and including a field-responsive element, which is operative to vary the resonance frequency responsively to the one or more magnetic fields. A position tracker is arranged to remotely sense the resonance frequency of the resonant circuit and to determine a position of the transponder responsively to the sensed resonance frequency.

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