Digital phase reversal detector
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United States of America Patent
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Jul 10, 2001
Grant Date -
N/A
app pub date -
Jun 25, 1998
filing date -
Oct 20, 1995
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Abstract
A phase reversal detector comprises a circuit for receiving an input signal subject to occasional phase reversals, a circuit for generating signals representing the quadrature components thereof, and a circuit responsive to a migration in the quadrature plane of the position of the quadrature components by an amount greater than a predetermined threshold to generate a signal indicative of a valid phase reversal. The detector is capable of exceeding the requirements of ITU standard G.165, and yet is simple to implement and works over a large dynamic range.
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