Distortion measurement and correction system and method
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United States of America Patent
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Oct 6, 2015
Grant Date -
Feb 12, 2015
app pub date -
Aug 6, 2014
filing date -
Aug 8, 2013
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Abstract
A method, computer program product, and computer system for determining a magnitude and phase of a spurious-free dynamic range component. A first signal and a second signal may be received from a first source operatively connected to a differential component. A first output associated with the first signal and a second output associated with the second signal may be nulled. The first signal and the second signal may be shorted. A second source operatively connected to the differential component may be disconnected. The first signal of the first source may be applied at a same phase as the second source with an additional phase delta, +Y∘. A first differential residual signal may be measured using the first signal at the same phase as the second source with the additional phase delta, +Y∘. The second signal of the first source may be applied at the same phase as the second source with an additional phase delta, −Y∘. A second differential residual signal may be measured using the second signal at the same phase as the second source with the additional phase delta, −Y∘. The magnitude and phase of the distortion component of the first source may be determined based upon, at least in part, the first and second differential residual signal.
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