ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,549,187, issued on Feb. 10, was assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (Stockholm).
"Phase-locked loop" was invented by Aravind Tharayil Narayanan (Lund, Sweden), Staffan Ek (Lund, Sweden), Lars Sundstrom (Lund, Sweden) and Roland Strandberg (Furulund, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A phase-locked loop comprises a voltage controlled oscillator. The voltage controlled oscillator comprises an inductor and a capacitor, connected in parallel, and also connected in parallel therewith, a negative resistance structure. A first terminal of the negative resistance structure is connected to respective first terminals of the indu...