Dale J Durand

Title: The Innovations of Dale J Durand

Introduction

Dale J Durand is a prominent inventor based in Irvine, California, known for his significant contributions to the field of superconducting technology. With a total of eight patents to his name, Durand has made remarkable advancements in analog-to-digital conversion and superconducting circuits.

Latest Patents

Among his latest patents is the "Application of single flux quantum pulse interaction to the simultaneous sampling in-phase and quadrature analog-to-digital converter." This invention features a superconducting oscillator/counter analog-to-digital converter that provides simultaneous in-phase and quadrature-phase outputs of an RF input signal. The RF input signal is converted into a series of single flux quantum (SFQ) input pulses by a superconducting voltage-controlled oscillator. A clock circuit generates a series of SFQ clock pulses, which are then applied to a pulse repulsion circuit that outputs the SFQ input pulses and clock pulses spaced apart in time. In one embodiment, the pulse repulsion circuit includes two Josephson transmission lines, where the magnetic coupling between the lines facilitates the SFQ pulse repulsion.

Another notable patent is the "Single flux quantum series biasing technique using superconducting DC transformer." This innovation lowers the required bias current for a superconductor integrated circuit by separating the circuit into portions with separate ground planes. The bias current is supplied to one circuit portion in series with that for another circuit portion in a different ground plane. To maintain DC isolation, SFQ pulses move across the separate ground planes through a pair of inductively coupled SQUIDs that define a DC transformer. A combiner reconstitutes and outputs the SFQ pulses, with the DC transformer including a primary and isolated secondary winding for inductive coupling.

Career Highlights

Dale J Durand has worked with notable companies such as TRW Limited and Northrop Grumman Systems Corporation. His experience in these organizations has contributed to his expertise in superconducting technologies and circuit design.

Collaborations

Durand has collaborated with several professionals in his field, including Mark Winslow Johnson and Arnold H Silver. These collaborations have further enriched his work and innovations.

Conclusion

Dale J Durand's contributions to superconducting technology and analog-to-digital conversion have established him as a significant figure in the field of innovation. His patents reflect a deep understanding of complex systems and a commitment to