Trw Limited

USA As Represented by Secretary of the Navy

Bruce J Dalrymple

Arnold H Silver

Quentin P Herr

Mark Winslow Johnson

Andrew Donovan Smith

Randy Wayne Simon

Hugo W Chan

Szutsun S Ou

Eugene L Dines

Susanne L Thomasson

A superconductor circuit ( ) for providing active timing arbitration between SFQ pulses. The superconductor circuit ( ) includes a first superconducting transmission line ( ) having at least one inductor ( ) for transmitting first input pulses, and a second superconducting transmission line ( ) having at least one inductor ( ) for transmitting second input pulses that are correlated to the first input pulses. The first and second superconducting transmission lines ( ) are coupled together in order to generate a flux attraction between the first and second input pulses for reducing relative timing uncertainty.

Active timing arbitration in superconductor digital circuits

A superconducting A/D converter ( ) has an error correction system ( ) for eliminating non-linearities in a primary quantizer ( ). The converter ( ) includes a primary quantizer ( ), a primary SFQ counter ( ), and the error correction system ( ). The primary quantizer ( ) generates primary SFQ pulses based on an average voltage of an analog input signal. The primary SFQ counter ( ) converts the primary SFQ pulses into a digital output signal based on a frequency of the primary SFQ pulses. The error correction system ( ) corrects the digital output signal based on the analog input signal and the primary SFQ pulses. Using the primary SFQ pulses to correct the digital output signal allows the converter ( ) to take into account the non-linearities of the primary quantizer ( ).

Gated counter analog-to-digital converter with error correction

A monolithically-integrated semiconductor/ superconductor infrared detector and readout circuit providing sensitive, low-noise detection of infrared radiation for high-performance focal plane array applications. The infrared detector and readout circuit includes a semiconductor infrared detector and a semiconductor/superconductor transimpedance readout amplifier fabricated directly on the infrared detector using thin-film, integrated-circuit processing techniques. A superconducting analog-to-digital (A/D) converter digitizes the detector signals in the cryogenically cooled environment of the detector before coupling the signals to the much warmer and electromagnetically noisier environment of the back-end signal processing electronics, thus reducing noise contamination.

Monolithically-integrated semiconductor/superconductor infrared detector

A high current amplifier, three terminal device, comprising a Josephson tunnel junction and a Schottky diode is configured so that the Josephson junction and Schottky diode share a common base electrode which is made very thin. Electrons which cross the Schottky barrier are supplied to the Josephson junction to obtain the amplified output current.

High current amplifier utilizing a josephson junction Schottky diode

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Redondo Beach, CA, United States of America

Bruce J Dalrymple