ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,537,494, issued on Jan. 27, was assigned to STMicroelectronics S.r.l. (Agrate Brianza, Italy).

"Circuit arrangement of an amplifier with current controlled gain and corresponding method" was invented by Nicola Rogledi (Pavia, Italy), Vanni Poletto (Milan) and Antonio Davide Leone (Siziano, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "In accordance with an embodiment, a variable gain amplifier includes: a first differential transistor pair coupled to a signal input; a first current source configured to provide a first bias current to the first differential transistor pair; a pair of diodes coupled to an output of the first differential transistor...