Method and apparatus for active load impedance monitoring
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United States of America Patent
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Nov 20, 2018
Grant Date -
Jun 30, 2016
app pub date -
Dec 30, 2014
filing date -
Dec 30, 2014
priority date (Note) -
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Abstract
An apparatus that includes a power amplifier; a load that is operatively connected to be electrically driven from the power amplifier; and an impedance monitor that is configured to in real-time identify a favorable segment within an output waveform of the power amplifier, model the baseline power spectral density of a load driven by the power amplifier during the identified segment of the output waveform, sample an empirical power spectral density of the load during the identified segment of the output waveform, and indicate a load fault in the event that the empirical power spectral density deviates from the baseline power spectral density beyond at least one pre-determined error criteria.
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