Transmitter front end with programmable notch filter and methods for use therewith
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United States of America Patent
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Jun 23, 2015
Grant Date -
May 2, 2013
app pub date -
Dec 18, 2011
filing date -
Oct 28, 2011
priority date (Note) -
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Abstract
A radio transmitter front end for use in a radio frequency (RF) transceiver includes at least one amplifier stage operable to generate a transmit signal in response to an upconverted signal. A feedback generator is operable to generate a transmit feedback signal in response to the transmit signal. A control signal generator is operable to generate at least one filter control signal in response to the transmit feedback signal. A notch filter is operable to filter out of band noise while passing in-band frequencies to the at least one amplifier stage, under control of the at least one filter control signal.
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