Superconducting analog-to-digital converter
AssigneeHypres, Inc.
InventorDmitri Kirichenko
Life of this patent
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Abstract
A superconducting bandpass sigma-delta Analog-to-Digital Converter (ADC) is disclosed. The ADC is characterized as being an Nth-order, having N resonators, with N being at least 2. The ADC also may have N-1 amplifiers, where the amplifiers directionally couple sequential pairs of the resonators. The ADC further includes a Josephson Junction (JJ) comparator. All N resonators connect in parallel to the JJ comparator, and the JJ comparator is providing an implicit feedback for all N resonators. A method for implementing the sigma-delta ADC without any explicit feedback loops is also disclosed.
Claims15
A superconducting Analog-to-Digital Converter (ADC), comprising:
- N resonators, with N being at least 2;
- a Josephson Junction (JJ) comparator, wherein all N said resonators connect in parallel to said JJ comparator, and wherein said JJ comparator is providing an implicit feedback for all N said resonators;
- and
- wherein said ADC is characterized as being an Nth-order bandpass sigma-delta ADC.
A digital radio frequency receiver, comprising:
- an Analog-to-Digital Converter (ADC), wherein said ADC is characterized as being an Nth-order bandpass sigma-delta ADC, wherein said ADC further comprises:
- N resonators, with N being at least 2;
- and
- a Josephson Junction (JJ) comparator, wherein all N said resonators connect in parallel to said JJ comparator, and wherein said JJ comparator is providing an implicit feedback for all N said resonators.
A 2-d order superconducting Analog-to-Digital Converter (ADC), comprising:
- a first resonator and a second resonator;
- a Josephson Junction (JJ) comparator, wherein both said first and second resonators connect in parallel to said JJ comparator, and wherein said JJ comparator is providing an implicit feedback for both said first and second resonators;
- and
- wherein said ADC is characterized as being a bandpass sigma-delta ADC.
A method for converting an electromagnetic analog signal into a digital signal, said method comprising:
- implementing an Nth-order bandpass sigma-delta Analog-to-Digital Converter (ADC), in said ADC:
- applying N resonators, wherein selecting N to be at least 2;
- and
- connecting all N said resonators in parallel to a Josephson Junction (JJ) comparator, and receiving an implicit feedback in all N said resonators from said JJ comparator.
Dependencies are inferred from the claim text.