Receiver for estimating and compensating for in-phase/quadrature mismatch
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United States of America Patent
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Nov 12, 2013
Grant Date -
Oct 25, 2012
app pub date -
Oct 13, 2011
filing date -
Oct 13, 2010
priority date (Note) -
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Abstract
A receiver includes a first mixer configured to provide an in-phase (I) component of a radio frequency (RF) signal to an I channel by down-converting the RF signal, a second mixer configured to provide a quadrature (Q) component of the RF signal to a Q channel by down-converting the RF signal, amplification means, arranged on the I and Q channels, configured to amplify the I and Q components, a mismatch estimator configured to convert the amplified I and Q components into a frequency domain, and estimate a gain mismatch value and a phase mismatch value on the basis of the converted components, and a mismatch compensator configured to compensate for mismatch of the received signal on the basis of the estimated gain and phase mismatch values.
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