ALEXANDRIA, Va., May 26 -- United States Patent no. 12,640,455, issued on May 26, was assigned to Telefonaktiebolaget LM Ericsson (PUBL) (Stockholm).
"Tunable waveguide resonator" was invented by Jan Sandberg (Frillesas, Sweden), Per Ligander (Gothenburg, Sweden) and Jonas Gustavsson (Bredared, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a tunable waveguide resonator and a method of tuning a frequency of the tunable waveguide resonator. The waveguide resonator comprises a waveguide part having a plurality of walls where one of the plurality of walls at least partly comprises a tuning element. The tuning element has a first main surface facing toward a first main sur...