LOW POWER QUADRATURE PHASE DETECTOR
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United States of America Patent
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Issued Date -
Apr 13, 2023
app pub date -
Jul 4, 2022
filing date -
Oct 13, 2021
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Abstract
The present invention provides a quadrature phase detector including a detection circuit. The detection circuit includes a first switch, a second switch and a first filter, wherein the first switch is controlled by a second clock signal to selectively couple a first clock signal to a first node, the second switch is controlled by the second clock signal to selectively coupled the first node to a reference voltage, and the first filter is configured to filter voltages at the first node to generate a first detection result.
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