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

Award Information
Agency:
National Science Foundation
Branch
n/a
Amount:
$299,995.00
Award Year:
1995
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
27471
Agency Tracking Number:
27471
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
175 Clearbrook Rd, Elmsford, NY, 10523
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Paul Bradley
(914) 592-1190
Business Contact:
() -
Research Institute:
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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