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Remotely powered and remotely interrogated wireless digital sensor telemetry system

  • US 20040113790A1
  • Filed: 09/23/2003
  • Published: 06/17/2004
  • Est. Priority Date: 09/23/2002
  • Status: Active Grant
First Claim
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1. An electronic system, comprising a reader and a remotely powered and remotely interrogated sensor transponder, said sensor transponder including a coil or antenna, a switched reactance circuit, a processor, and a sensor, wherein said sensor can detect more than two values of a parameter, wherein said sensor transponder receives power radiated from said reader for powering said sensor transponder, and further wherein said sensor transponder is capable of processing sensor data in said processor and transmitting said sensor data to said reader using said switched reactance circuit.

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