Amplifier phase distortion correction based on amplitude distortion measurement
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United States of America Patent
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Jul 12, 2016
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Mar 17, 2014
filing date -
Mar 15, 2013
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Abstract
This application discloses correction circuitry for correcting a phase distortion in an amplification circuit by measuring an amplitude distortion and controlling a phase shifting component based upon the measured amplitude distortion. In one embodiment, a first amplitude distortion sensor is coupled to a first node of an amplification circuit, and a first phase shifter is coupled to a second node of the amplification circuit. Additionally, a first control circuit is coupled to the first amplitude sensor and to the first phase shifter. The first control circuit is configured to correlate a first amplitude distortion measured by the first amplitude distortion sensor to a first inferred phase distortion, and to generate a first phase correction signal based upon the first inferred phase distortion, and is configured to send the first phase correction signal towards the first phase shifter.
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