ALEXANDRIA, Va., June 5 -- United States Patent no. 12,278,600, issued on April 15, was assigned to Raytheon Co. (Arlington, Va.).
"Amplifier bias circuit" was invented by John P. Bettencourt (Boxford, Mass.), Valery S. Kaper (Winchester, Mass.) and Steven M. Lardizabal (Westford, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatus for an amplifier including first and second transistors coupled in a stacked configuration with first and second current mirrors to provide respective bias signals to the amplifier transistors. A reference transistor is coupled to the first and second current mirrors for referencing the bias signals together."
The patent was filed on Dec. 28, 2021, under Ap...