ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,381,305, issued on Aug. 5, was assigned to PSEMI Corp. (San Diego).
"Switchable directional coupler with intermediate termination state" was invented by Joseph Slaton (San Diego) and Peter Bacon (Derry, N.H.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Quarter-wavelength switchable directional coupler architectures and methods that that use intermediate terminated states during directional mode-switching events to prevent generation of reflection coefficients that cause spur generation. A first embodiment of the invention utilizes existing circuitry within a quarter-wavelength switchable directional coupler but alters the conventional mode-switching se...