ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,783,928, issued on Nov. 3, was assigned to IQM FINLAND OY (Espoo, Finland).

"Tunable dissipative circuits for low temperature frequency shifters, and methods for making a frequency shift at low temperature" was invented by Vasilii Sevriuk (Espoo, Finland), Juha Hassel (Espoo, Finland) and Mikko Mottonen (Espoo, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tunable dissipative circuit is presented for shifting a frequency of a radio frequency signal or microwave signal in a cryogenically cooled environment. One or more couplers make couplings between a propagation path and a tunable resonance element and a controllable dissipator element. A fir...