US 12,080,488 B2
Low-temperature radio-frequency tuning circuit
Mark Buitelaar, London (GB); Pavlos Apostolidis, London (GB); Byron Villis, London (GB); and Pavlo Zubko, London (GB)
Assigned to UCL BUSINESS LTD, London (GB)
Appl. No. 17/597,541
Filed by UCL BUSINESS LTD, London (GB)
PCT Filed Jul. 10, 2020, PCT No. PCT/EP2020/069551
§ 371(c)(1), (2) Date Jan. 11, 2022,
PCT Pub. No. WO2021/005208, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 1909976 (GB), filed on Jul. 11, 2019.
Prior Publication US 2022/0351911 A1, Nov. 3, 2022
Int. Cl. H01G 7/06 (2006.01); H03F 19/00 (2006.01); H03H 11/28 (2006.01)
CPC H01G 7/06 (2013.01) [H03F 19/00 (2013.01); H03H 11/28 (2013.01); H03F 2200/451 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A low-temperature radio-frequency tuning circuit comprising:
a voltage-tunable capacitor and an inductor,
wherein the capacitor is tunable and comprises:
a dielectric medium; and
two electrodes associated with the medium, wherein the capacitor has a capacitance between the electrodes,
wherein the medium comprises a quantum paraelectric material and the capacitance is tunable by application of a voltage to apply an electric field to the medium, and
wherein the capacitance is tunable at a temperature of less than 4 kelvin.