US 11,942,902 B2
Methods related to power amplification systems with adjustable common base bias
Philip John Lehtola, Cedar Rapids, IA (US); and Scott W. Coffin, Marion, IA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed on Dec. 28, 2022, as Appl. No. 18/090,441.
Application 18/090,441 is a continuation of application No. 16/372,410, filed on Apr. 2, 2019, granted, now 11,545,938.
Application 16/372,410 is a continuation of application No. 15/641,306, filed on Jul. 4, 2017, granted, now 10,250,202, issued on Apr. 2, 2019.
Application 15/641,306 is a continuation of application No. 14/867,227, filed on Sep. 28, 2015, granted, now 9,698,734, issued on Jul. 4, 2017.
Claims priority of provisional application 62/116,499, filed on Feb. 15, 2015.
Prior Publication US 2023/0261616 A1, Aug. 17, 2023
Int. Cl. H03F 1/30 (2006.01); H03F 1/02 (2006.01); H03F 1/22 (2006.01); H03F 3/191 (2006.01); H03F 3/195 (2006.01); H03F 3/21 (2006.01); H03F 3/24 (2006.01); H04B 1/04 (2006.01)
CPC H03F 1/30 (2013.01) [H03F 1/0261 (2013.01); H03F 1/22 (2013.01); H03F 1/302 (2013.01); H03F 3/191 (2013.01); H03F 3/195 (2013.01); H03F 3/211 (2013.01); H03F 3/24 (2013.01); H03F 3/245 (2013.01); H03F 2200/447 (2013.01); H03F 2200/451 (2013.01); H03F 2200/468 (2013.01); H03F 2203/21106 (2013.01); H04B 2001/0408 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of implementing a power amplification system comprising:
providing a cascode amplifier coupled to a radio-frequency input signal and coupled to a radio-frequency output; and
providing a biasing component including one or more sensors, a bias controller, and a plurality of bias components, the biasing component configured to apply a first biasing signal to a first transistor of the cascode amplifier using a first bias component and apply a second biasing signal to a second transistor of the cascode amplifier using a second bias component, the second biasing signal being adjustable and applied to a base of the second transistor, the bias controller configured to provide a reference voltage to the second bias component coupled to a bias transistor.