Application of single flux quantum pulse interaction to the simultaneous sampling in-phase and quadrature analog-to-digital converter
US6750794B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2003 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | May 15, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/62
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A superconducting oscillator/counter analog-to-digital converter (50) that provides simultaneous in-phase and quadrature-phase of an RF input signal. The RF input signal is converted to a series of SFQ input pulses by a superconducting voltage controlled oscillator (12). A clock circuit (26) generates a series of SFQ clock pulses. The SFQ input pulses and the SFQ clock pulses are applied to a pulse repulsion circuit (52) that outputs the SFQ input pulses and the SFQ clock pulses spaced apart in time. In one embodiment, the pulse repulsion circuit (52) includes two Josephson transmission lines (60, 62), where the magnetic coupling between the lines (60, 62) provides the SFQ pulse repulsion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.