Interrogator and interrogation system employing the same
DC CAFCFirst Claim
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1. An interrogator, comprising:
- an antenna configured to receive a first signal and a second signal from a first object and a second object, respectively, in close unobstructed proximity; and
a control and processing subsystem configured to discern a presence of said first object and said second object from said first signal and said second signal, respectively, as said antenna moves with respect to said first object and said second object.
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Abstract
The present invention is directed to an interrogator, method of discerning metal and radio frequency identification (RFID) objects, and an interrogation system employing the same. In one embodiment, the interrogator includes a metal sensing subsystem configured to provide a first signal having a signature representing a presence of a metal object, and a RFID sensing subsystem configured to provide a second signal having a signature representing a presence of a RFID object. The interrogator also includes a control and processing subsystem configured to discern a presence of at least one of the metal and RFID objects from one of the first and second signals.
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22 Claims
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1. An interrogator, comprising:
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an antenna configured to receive a first signal and a second signal from a first object and a second object, respectively, in close unobstructed proximity; and a control and processing subsystem configured to discern a presence of said first object and said second object from said first signal and said second signal, respectively, as said antenna moves with respect to said first object and said second object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of operating an interrogator, comprising:
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receiving a first signal and a second signal from a first object and a second object, respectively, in close unobstructed proximity at an antenna; and discerning a presence of said first object and said second object with a control and processing subsystem from said first signal and said second signal, respectively, as said antenna moves with respect to said first object and said second object. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification