ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,537,489, issued on Jan. 27, was assigned to Analog Devices Inc. (Wilmington, Mass.).
"Integrated directional coupler for broadband amplifier" was invented by Christopher J. Day (Santa Rosa, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods that integrate a directional coupling function with directivity that does not have output loss are disclosed. For example, a power amplifier circuit arrangement includes an input terminal to receive an input signal; amplifier circuitry including a first amplifier stage, a second amplifier stage, and a virtual ground node, where an input of the first amplifier stage is coupled to the input termi...