Radio frequency digital filter group delay mismatch reduction
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United States of America Patent
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Apr 28, 2015
Grant Date -
Jul 18, 2013
app pub date -
Jan 16, 2012
filing date -
Jan 16, 2012
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Abstract
A radio frequency (RF) front end having group delay mismatch reduction is provided. One embodiment provides a first feed forward path and a second feed forward path. The second feed forward path is electrically in parallel with the first feed forward. The second feed forward path has a first signal path and a second signal path. The first and second signal paths are arranged to be electrically in parallel. The first signal path has a digital filter. The second signal path has a tunable analog filter. The tunable analog filter operates to reduce a delay associated with the second feed forward path as compared with a delay associated with the first feed forward path.
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