US 12,334,972 B2
Mixed signal low noise interference cancellation
David Richard Pehlke, Westlake Village, CA (US); Anand Raghavan, Middleton, WI (US); Poul Olesen, Stoevring (DK); Werner Schelmbauer, Steyr (AT); Thorsten Tracht, Munich (DE); Wolfgang Thomann, Munich (DE); Amir Israel Rubin, Kiryat Ono (IL); Assi Jakoby, Raanana (IL); and Ofer Benjamin, Petach Tikva (IL)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Jun. 26, 2024, as Appl. No. 18/754,595.
Application 18/754,595 is a continuation of application No. 18/339,906, filed on Jun. 22, 2023, granted, now 12,057,879.
Application 18/339,906 is a continuation of application No. 16/948,549, filed on Sep. 23, 2020, granted, now 11,736,140, issued on Aug. 22, 2023.
Claims priority of provisional application 62/906,917, filed on Sep. 27, 2019.
Prior Publication US 2024/0348281 A1, Oct. 17, 2024
Int. Cl. H04B 1/525 (2015.01); H04B 1/04 (2006.01); H04B 1/10 (2006.01); H04B 1/12 (2006.01); H04B 7/0413 (2017.01)
CPC H04B 1/525 (2013.01) [H04B 1/0475 (2013.01); H04B 1/1027 (2013.01); H04B 1/123 (2013.01); H04B 7/0413 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wireless device comprising:
a transmitter configured to generate a radio frequency transmit signal;
a front end system configured to receive the radio frequency transmit signal, the front end system including a first filter configured to filter the radio frequency transmit signal to generate a first radio frequency feedback signal, and a second filter configured to filter the radio frequency transmit signal to generate a second radio frequency feedback signal;
a first feedback receiver configured to process the first radio frequency feedback signal to generate a first digital interference cancellation signal;
a second feedback receiver configured to process the second radio frequency feedback signal to generate a second digital interference cancellation signal; and
a receiver configured to receive a radio frequency receive signal, the receiver further configured to compensate the radio frequency receive signal for interference based on the first digital interference cancellation signal and the second digital interference cancellation signal.