Dae Am Kwon

US Patent:

20130109334, May 2, 2013

Filed:

Dec 18, 2011

Appl. No.:

13/329300

Inventors:

Dae Kwon - San Diego CA, US
Ali Afsahi - San Diego CA, US
Arya Reza Behzad - Poway CA, US

Assignee:

BROADCOM CORPORATION - Irvine CA

International Classification:

H04B 1/04

US Classification:

4551143

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.