US 11,736,091 B2
Baseband filter for current-mode signal path
Sudipto Chakraborty, Plano, TX (US); Raymond Richetta, Rochester, MN (US); and John Francis Bulzacchelli, Somers, NY (US)
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Dec. 20, 2021, as Appl. No. 17/555,998.
Prior Publication US 2023/0198505 A1, Jun. 22, 2023
Int. Cl. H03H 7/12 (2006.01); H03H 11/04 (2006.01)
CPC H03H 11/0461 (2013.01) [H03H 11/0466 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A device, comprising:
a baseband filter that receives an input current and outputs an output current, the baseband filter comprising:
a feedback loop component having an active circuit branch and a passive circuit branch coupled in a loop, wherein the active circuit branch comprises a first transistor and a second transistor, wherein the passive circuit branch comprises a first resistor coupled to a drain of the second transistor, and a first capacitor coupled to a gate of the first transistor;
a mirroring device; and
an additional circuit portion coupled between the feedback loop component and the mirroring device, wherein the additional circuit portion comprises a second resistor and a second capacitor coupled to the gate of the first transistor and coupled to a gate of a third transistor of the mirroring device.