US 11,777,496 B1
Low voltage signal path in a radio frequency signal generator
Sudipto Chakraborty, Plano, TX (US); John Francis Bulzacchelli, Somers, NY (US); and Daniel Joseph Friedman, Sleepy Hollow, NY (US)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Aug. 22, 2022, as Appl. No. 17/892,324.
Int. Cl. H03D 7/14 (2006.01); H03K 17/687 (2006.01); G06N 10/20 (2022.01); H03K 5/02 (2006.01); H03K 5/1252 (2006.01)
CPC H03K 17/6871 (2013.01) [G06N 10/20 (2022.01); H03D 7/1425 (2013.01); H03K 5/02 (2013.01); H03K 5/1252 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A device, comprising:
a voltage-mode filter circuit which is configured to generate a voltage signal on an output terminal thereof;
a current-mode output circuit comprising an input transistor which comprises a gate terminal coupled to the output terminal of the voltage-mode filter circuit, and a source terminal coupled to a regulated node; and
a regulation circuit configured to adjust a voltage level on the regulated node to maintain a constant gate-source bias voltage for the input transistor to generate a current for biasing the current-mode output circuit.