Systems and methods for determining a temperature of a ferroelectric sensor
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United States of America Patent
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Jun 30, 2009
Grant Date -
Dec 11, 2008
app pub date -
Jun 11, 2007
filing date -
Jun 11, 2007
priority date (Note) -
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Abstract
Systems and methods for determining a temperature of a ferroelectric sensor are provided. The ferroelectric sensor has operational characteristics defined by a polarization versus voltage hysteresis loop. In one exemplary embodiment, the method includes applying a symmetrical periodic voltage waveform to the ferroelectric sensor so as to induce the ferroelectric sensor to traverse the polarization versus voltage hysteresis loop. The method further includes monitoring voltages across the ferroelectric sensor and polarization states of the ferroelectric sensor over a first time interval to determine a first zero field polarization state and a first coercive field voltage. The method further includes determining a first temperature value indicative of the temperature of the ferroelectric sensor based on the first coercive field voltage.
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