Method and system for detecting and correcting quadrature error signals for MEMS device
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United States of America Patent
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Jul 11, 2017
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Jul 1, 2014
filing date -
Apr 11, 2014
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Abstract
A quadrature error signal cancellation circuit and technique can detect an undesired quadrature signal component in the output of a MEMS gyroscope and null the quadrature signal component. In one embodiment, the cancellation circuit is configured in a feedback loop with the MEMS gyroscope and includes components to detect and condition the quadrature signal, digitize the conditioned quadrature signal, and generate a quadrature error cancellation signal which is provided back to the MEMS gyroscope.
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