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Interrogator and interrogation system employing the same

  • US 20040174261A1
  • Filed: 03/03/2003
  • Published: 09/09/2004
  • Est. Priority Date: 03/03/2003
  • Status: Active Grant
First Claim
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1. An interrogator, comprising:

  • a metal sensing subsystem configured to provide a first signal having a metal signature representing a presence of a metal object;

    a radio frequency identification (RFID) sensing subsystem configured to provide a second signal having a RFID signature representing a presence of a RFID object; and

    a control and processing subsystem configured to discern a presence of at least one of said metal and RFID objects from one of said first and second signals.

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