Patent ID: 7317364

Claim:
A tuning system comprising a. a cryogenic cooler; b. a cryogenically cooled filtering apparatus contained within the cryogenic cooler, wherein the filtering apparatus comprises i. an input end, ii. an output end, and iii. a plurality of tuning devices, wherein each tuning device comprises (1) a respective resonator, and (2) a corresponding voltage-sensitive capacitor; c. an input line penetrating the cryogenic cooler, wherein a first end of the input line is operatively coupled to the input end of the filtering apparatus, wherein the input line supplies an unfiltered signal to the filtering apparatus; d. an output line penetrating the cryogenic cooler, wherein a first end of the output line is operatively coupled to the output end of the filtering apparatus, wherein the output line carries a filtered signal from the filtering apparatus; e. a one-to-many switching device comprising i. a channel select input port, ii. a tuning voltage input port, and iii. a plurality of output channels capable of carrying a respective voltage, wherein a respective output channel is coupled to the voltage-sensitive capacitor in a corresponding one of the tuning devices in the filtering apparatus; f. a channel select input line penetrating the cryogenic cooler, wherein a first end of the channel select input line is operatively coupled to the channel select input port of the one-to-many switching device; and g. a tuning voltage input line penetrating the cryogenic cooler, wherein a first end of the tuning voltage input line is operatively coupled to the tuning voltage input port of the one-to-many switching device, wherein the tuning voltage input line is capable of carrying a voltage which the one-to-many switching device can apply through one of the output channels to the voltage-sensitive capacitor in a corresponding one of the tuning devices coupled to said output channel, wherein the switching device selects the output line based on the signal from the channel select line.