US 12,470,179 B2
RF transceiver front end module with improved linearity
Ziv Alon, Thousand Oaks, CA (US); and Maxwell L. Thomas, Newbury Park, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Oct. 11, 2022, as Appl. No. 17/963,474.
Application 16/422,593 is a division of application No. 14/715,307, filed on May 18, 2015, granted, now 10,333,474, issued on Jun. 25, 2019.
Application 17/963,474 is a continuation of application No. 16/422,593, filed on May 24, 2019, granted, now 11,496,101.
Claims priority of provisional application 62/005,769, filed on May 30, 2014.
Claims priority of provisional application 62/000,989, filed on May 20, 2014.
Claims priority of provisional application 62/000,455, filed on May 19, 2014.
Prior Publication US 2023/0179155 A1, Jun. 8, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H03F 3/19 (2006.01); H03F 1/02 (2006.01); H03F 1/32 (2006.01); H03F 3/21 (2006.01); H03F 3/24 (2006.01); H04B 1/04 (2006.01); H04B 1/30 (2006.01); H04W 88/02 (2009.01)
CPC H03F 3/19 (2013.01) [H03F 1/0227 (2013.01); H03F 1/3247 (2013.01); H03F 3/21 (2013.01); H03F 3/245 (2013.01); H04B 1/0475 (2013.01); H04B 1/30 (2013.01); H04W 88/02 (2013.01); H03F 2200/451 (2013.01); H03F 2201/3224 (2013.01); H04B 2001/0425 (2013.01); H04B 2001/0433 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio frequency system comprising:
a radio frequency circuit including a power amplifier configured to amplify a radio frequency transmit signal to generate an amplified radio frequency transmit signal;
one or more memory devices storing a plurality of entries generated during a pre-characterization of the radio frequency circuit under a plurality of characterization states corresponding to different input conditions; and
a processor configured to receive measurements derived from the amplified radio frequency transmit signal, access entries of the plurality of entries based at least in part on the measurements, and, prior to amplification of the radio frequency transmit signal by the power amplifier, adjust the radio frequency transmit signal based on the accessed entries to compensate for one or more memory effects present in the radio frequency circuit.