TUNABLE SUPERCONDUCTING NOTCH FILTER

摘要

A technique relates to a superconductor tunable notch filter. A Josephson junction filter array is connected to a coupling pad and connected to ground. The Josephson junction filter array includes a filter inductance. The Josephson junction filter array connected to the coupling pad forms a filter capacitance. A Josephson junction bias array is connected to the coupling pad and connected to a current source. The Josephson junction bias array includes a bias inductance. A transmission line is connected to the coupling pad in which connection of the transmission line and the coupling pad forms a coupling capacitance, such that the filter inductance and the filter capacitance connect to the transmission line through the coupling capacitance. The Josephson junction filter array includes a notch filter frequency that is tunable according to a magnitude of a current bias from the current source.

主权项

1. A superconductor tunable notch filter comprising:
a Josephson junction filter array connected to a coupling pad and connected to ground, the Josephson junction filter array comprising a filter inductance; wherein the Josephson junction filter array connected to the coupling pad forms a filter capacitance; a Josephson junction bias array connected to the coupling pad and connected to a current source, the Josephson junction bias array comprising a bias inductance; and a transmission line connected to the coupling pad in which connection of the transmission line and the coupling pad form a coupling capacitance, such that the filter inductance and the filter capacitance connect to the transmission line through the coupling capacitance; wherein the Josephson junction filter array comprises a notch filter frequency that is tunable according to a magnitude of a current bias from the current source.