SAB BASED LOOP FILTER WITH CROSS-COUPLED STRUCTURE AND ADC INCLUDING THE SAME
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United States of America
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Issued Date -
Feb 13, 2025
app pub date -
Jun 11, 2024
filing date -
Jun 11, 2024
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Abstract
Disclosed is a loop filter, comprising, a first single-amplifier biquad (SAB) integrator configured to apply an integration operation to an in-phase (I) input signal; a second SAB integrator configured to apply an integration operation to a quadrature (Q) input signal; a first cross-coupled path between an output terminal of the first SAB integrator and an input side of the second SAB integrator and configured to apply a first gain to an output voltage of the first SAB integrator; and a second cross-coupled path between an output terminal of the second SAB integrator and an input side of the first SAB integrator and configured to apply a negative of the first gain to an output voltage of the second SAB integrator.
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