Coded data generation or conversion – Analog to or from digital conversion – With particular solid state devices
Patent
1992-09-16
1994-08-23
Hoff, Marc S.
Coded data generation or conversion
Analog to or from digital conversion
With particular solid state devices
341171, H03M 100
Patent
active
053411366
ABSTRACT:
A bandpass sigma-delta modulator for an analog-to-digital converter is provided in which an RLC circuit connected to the input analog signal is resonant at an intermediate frequency. A Josephson junction connected to the RLC circuit receives the current flowing through the RLC circuit. The Josephson junction emits a voltage pulse which reduces the RLC circuit current when the current in the Josephson junction exceeds its critical current. Selected multiples of the voltage pulse generated by the Josephson junction are fed back to the RLC circuit. A digital output is generated from the voltage pulses generated by the Josephson junction to complete the analog-to-digital conversion of the input signal.
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Miller Donald L.
Przybysz John X.
Hoff Marc S.
Lenart R. P.
Westinghouse Electric Corp.
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