US 11,916,518 B2
Analog bias control of RF amplifiers
Douglas M. Johnson, Doylestown, PA (US); Guillaume Alexandre Blin, Carlisle, MA (US); Michael John Mitzen, Hillsborough, NJ (US); Jung Hee Lee, Burlington, MA (US); Weize Xu, Acton, MA (US); and Attila Kalamar, Franklin, NJ (US)
Assigned to SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed by SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed on Apr. 20, 2022, as Appl. No. 17/659,870.
Application 17/659,870 is a continuation of application No. 17/007,056, filed on Aug. 31, 2020, granted, now 11,329,609.
Claims priority of provisional application 62/905,590, filed on Sep. 25, 2019.
Prior Publication US 2022/0247359 A1, Aug. 4, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H03F 1/34 (2006.01); H03F 1/02 (2006.01); H03F 3/195 (2006.01)
CPC H03F 1/0233 (2013.01) [H03F 3/195 (2013.01); H03F 2200/462 (2013.01); H03F 2200/471 (2013.01); H03F 2200/481 (2013.01)] 20 Claims
OG exemplary drawing
 
11. An amplifier module comprising:
an amplifier die having a plurality of amplifier contacts;
a controller die having a plurality of controller contacts, the controller die being separate from the amplifier die;
an RF amplifier implemented on the amplifier die;
a programmable current controller implemented on the controller die, the programmable current controller including a current source and a feedback amplifier;
a reference resistor coupled to the current source and the feedback amplifier and having a reference voltage based on a reference current produced by the current source; and
a sense resistor coupled to the RF amplifier and the feedback amplifier and having a sense voltage based on a DC bias current produced by the RF amplifier.