×

Multiple frequency detection system

  • US 20060158316A1
  • Filed: 01/17/2006
  • Published: 07/20/2006
  • Est. Priority Date: 01/18/2005
  • Status: Active Grant
First Claim
Patent Images

1. A multiple frequency detection system, comprising:

  • a reader that emits a pulse interrogation signal at a first frequency; and

    a resonant tag that receives the pulse interrogation signal at the first frequency and responds to the pulse interrogation signal by transmitting a first response signal resonated at the first frequency, said resonant tag further transmitting a second response signal resonated at a second frequency offset from the first frequency, said reader further reading one of the first and second response signals, and optionally reading the other one of the first and second response signals to detect said resonant tag.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×