System and method for identifying a signature of a device, in a communication circuit, utilizing distortion products
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United States of America Patent
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Aug 9, 2011
Grant Date -
Dec 29, 2005
app pub date -
Jun 29, 2004
filing date -
Jun 29, 2004
priority date (Note) -
Expired
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Abstract
A system for identifying characteristics of communication circuit devices in a communication circuit includes a stimulus signal generator configured to generate a stimulus signal at a plurality of amplitudes for the communication circuit devices. At least one of the plurality of amplitudes exceeds a first predetermined threshold. At least one communication circuit device is configured to generate a signature signal in response to the stimulus signal when the stimulus signal exceeds the first predetermined threshold. The system includes an evaluation device configured to evaluate at least one intermodulation distortion (IMD) product of the signature signal generated by the at least one communication circuit device, and to identify a class of the at least one communication circuit device according to a transition level of an amplitude of the at least one IMD product of the signature signal that exceeds a second predetermined threshold.
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