AN 8-BIT SUPERCONDUCTING ANALOG-TO-DIGITAL CONVERTER WITH 10 GHZ INPUT BANDWIDTH

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: N/A
Agency Tracking Number: 27471
Amount: $299,995.00
Phase: Phase II
Program: SBIR
Awards Year: 1995
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Hypres Inc.
175 Clearbrook Rd, Elmsford, NY, 10523
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Paul Bradley
 (914) 592-1190
Business Contact
Phone: () -
Research Institution
N/A
Abstract
INVESTIGATORS HAVE DEMONSTRATED A 6-BIT A/D CAPABLE OF ABOUT 5 BITS OF RESOLUTION AT 4 GHZ INPUT BANDWIDTH AND ABOUT 4 BITS OF RESOLUTION AT 7 GHZ INPUT BANDWIDTH. THE INPUT BANDWIDTH IS ABOUT 10 GHZ (THE 3DB POINT). HOWEVER, THE RESOLUTION AT GHZ FREQUENCIES IS LIMITED BY DYNAMIC DISTORTIONS IN THE THRESHOLDS PROPORTIONAL TO THE INPUT SIGNAL SLEW RATE. A NEW COMPARATOR DESIGN HAS BEEN SIMULATED IN WHICH THESE DISTORTIONS ARE LARGELY CANCELLED BY SYMMETRY. SIMULATIONS INDICATE AN ORDER OF MAGNITUDE IMPROVEMENT IN THE APERTURE TIME OF THE A/D IF THE PROPER ARCHITECTURE IS USED (ABOUT 3 MORE BITS OF RESOLUTION AT HIGH FREQUENCIES). RESEARCHERS INTEND TO FABRICATE AND TEST THIS DESIGN TO VERIFY THIS LEVEL OF PERFORMANCE AT THE SINGLE COMPARATOR LEVEL.

* information listed above is at the time of submission.

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