ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,731,890, issued on Sept. 8, was assigned to Microsoft Technology Licensing LLC (Redmond, Wash.).

"Retrodirective surface mount antennas" was invented by Jouya Jadidian (Los Gatos, Calif.) and Mohammad Mustafa Malik (Snoqualmie, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are provided for improving a reflection signal of a radar antenna assembly. For example, disclosed embodiments are directed to a multiple retrodirective surface mount antenna assembly comprising a plurality of retrodirective antenna arrays, each retrodirective antenna array being angularly offset from at least one other retrodirective antenna array and being...