ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,407,339, issued on Sept. 2, was assigned to QUALCOMM Inc. (San Diego).
"Attenuator using variable resistors" was invented by Lei Ma (Palo Alto, Calif.), Chenliang Du (San Diego) and Antonino Scuderi (San Diego).
According to the abstract* released by the U.S. Patent & Trademark Office: "Certain aspects of the present disclosure are directed towards a signal processing circuit. The signal processing circuit generally includes: an impedance transformation circuit coupled between a first node and a second node; and an attenuation circuit including a first variable resistive element coupled between the first node and a reference potential node, and a second variable resistive element cou...