DESIGN STUDY OF SUPERCONDUCTING OVERSAMPLING FLUX-COUNTING A/D CONVERTERS USING RAPID SINGLE FLUX QUANTUM (RSFQ) LOGIC

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: N/A
Agency Tracking Number: 15301
Amount: $49,991.00
Phase: Phase I
Program: SBIR
Awards Year: 1991
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Hypres Inc
175 Clearbrook Road, Elmsford, NY, 10523
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Sergey Rylov
 Principal Investigator
 (914) 592-1190
Business Contact
Research Institution
N/A
Abstract
HYPRES PROPOSES A PROGRAM TO RESEARCH, DEVELOP, AND DEMONSTRATE FEASIBILITY OF A NEW FAMILY OF HIGH-PERFORMANCE SUPERCONDUCTING A/D CONVERTERS USING THE PRINCIPLES OF COUNTING SINGLE MAGNETIC FLUX QUANTA AND OVERSAMPLING; IT IS CAPABLE OF BOTH WIDE-BANDWIDTH AND HIGH ACCURACY OPERATION BY MAINTAINING UNIQUE BANDWIDTH-ACCURACY TRADEOFF RATIO OF 1.5 EFFECTIVE BITS (INSTEAD OF USUAL 1 BIT) PER FACTOR-OF-2 BANDWIDTH REDUCTION WHILE STARTING AS HIGH AS 1 BIT AT 20-50 GHZ BANDWIDTH (DEPENDING ON TECHNOLOGY LEVEL). THE PROPOSED ADC FAMILY IS EMPLOYING RECENTLY DEVELOPED RAPID SINGLE FLUX QUANTUM (RSFQ) LOGIC/ MEMORY ELEMENTS CAPABLE OF CLOCK FREQUENCIES IN EXCESS OF 100 GHZ. IN PHASE I WE INTEND TO COMPLETE THEORETICAL STUDY OF THIS ADC FAMILY AND TO DESIGN, FABRICATE AND DEMONSTRATE ITS KEY COMPONENTS OPERATING AT MULTI-GHZ CLOCK FREQUENCIES. IN PHASE II WE PLAN TO CONTINUE THIS WORK WITH THE AIM OF OBTAINING A WORKING PROTOTYPE OF OVERSAMPLING FLUX-COUNTING ADC DEMONSTRATING THE IMPROVED ACCURACY/BANDWIDTH TRADE-OFF RATIO MENTIONED ABOVE. THE PRINCIPAL BENEFITS ARE EXPECTED TO BE IN HIGH-SPEED REAL-TIME SIGNAL PROCESSING WHERE WIDEBANDWIDTH AND/OR HIGH ACCURACY DIGITIZATION OF TRANSIENTS IS IMPERATIVE, SUCH AS RADAR, DIGITAL TV, ENCRYPTED COMMUNICATIONS, HIGH-SPEED ELECTRONICS INSTRUMENTATION, ELECTRONIC WARFARE SYSTEMS, ETC. COMBINATION OF THE FLUX COUNTING APPROACH WITH THE OVERSAMPLING TECHNIQUE WILL DRASTICALLY IMPROVE BOTH STATIC AND DYNAMIC ACCURACY OF A/D CONVERSION, LEADING TO CONVERTORS WITH PERFORMANCE TO 16 EFFECTIVE BITS AT BANDWIDTHS OF 20-50 MHZ.

* information listed above is at the time of submission.

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