US 11,838,025 B2
Radio frequency doubler and tripler
Lionel Vogt, La Rochette (FR)
Assigned to STMICROELECTRONICS SA, Montrouge (FR)
Filed by STMICROELECTRONICS SA, Montrouge (FR)
Filed on Aug. 25, 2022, as Appl. No. 17/822,375.
Claims priority of application No. 2108930 (FR), filed on Aug. 26, 2021.
Prior Publication US 2023/0067052 A1, Mar. 2, 2023
Int. Cl. H03K 5/00 (2006.01)
CPC H03K 5/00006 (2013.01) 18 Claims
OG exemplary drawing
 
1. A radiofrequency doubler comprising:
a first transistor and a second transistor connected in parallel between a first differential output and a first terminal of a current source configured to provide a bias current, a second terminal of the current source being connected to a first supply potential;
a third transistor connected between the first terminal of the current source and a second differential output;
a circuit configured to:
apply an AC component of a first differential input and a first DC voltage to a gate of the first transistor,
apply an AC component of a second differential input and the first DC voltage to a gate of the second transistor, and
apply a second DC voltage to a gate of the third transistor; and
a feedback loop configured to control the first voltage or the second voltage from a difference between DC components of the first and second differential outputs so as to equalize the DC components.