Method and apparatus for extracting the quadrature component of a complex signal from the in-phase component after baseband digitizing using a complex transform
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United States of America Patent
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Apr 7, 2015
Grant Date -
Jul 3, 2014
app pub date -
Dec 29, 2012
filing date -
Dec 29, 2012
priority date (Note) -
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Abstract
A method and apparatus for a receiver system in a receiver that includes at least two front end branches, each branch having its own intermediate frequency (IF) mixer to shift a received signal to an IF. When receiving multiple independent signals, the signals are digitized and the receiver performs a digital complex transform on each signal to obtain the corresponding quadrature component. When receiving a single signal the signal is routed to two mixers that are 90 degrees out of phase to obtain the quadrature signal components in the analog section of the receiver.
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