ALEXANDRIA, Va., May 26 -- United States Patent no. 12,640,686, issued on May 26, was assigned to The Regents of the University of California (Oakland, Calif.).

"Harmonic mixer with multi-phase local oscillator signals for inherently linear upconversion" was invented by Huan Wang (Irvine, Calif.) and Payam Heydari (Irvine, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are example embodiments of harmonic mixer. The harmonic mixer including a multi-phase LO signal generator. Each phase of the multi-phase LO signal generator outputting an LO signal on a signal line. The harmonic mixer including a plurality of mixers. Each mixer of the plurality of mixers connected to a signal line. The mixer d...