MONOLITHIC GAAS DIGITIZER FOR SPACE-BASE LASER ALTIMETER PULSE-SPREADING EFFECT

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$495,225.00
Award Year:
1989
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
6815
Agency Tracking Number:
6815
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
620-1 Hampshire Rd, Westlake Village, CA, 91361
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr Binneg Y Lao
() -
Business Contact:
() -
Research Institute:
n/a
Abstract
A MINIATURE, LOW-POWER, GAAS MONOLITHIC GHZ WAVEFORM DIGITIZER IS PROPOSED FOR ANALYZINGSPACE-BASE LASER ALTIMETER PULSE-SPREADING EFFECT. IT CONSISTS OF A GHZ GAASSAMPLE-AND-HOLD AND A 6-BIT MONOLITHIC GAAS FLASH A/D CONVERTER USING THE ENHANCEMENT/DEPLETION (E/D) TECHNOLOGY AND LATCHING COMPARATORS. THE ADVANTAGES OF THE APPROACH ARE: (1) THE USE OF A FRONT-END SAMPLE-AND-HOLD ELIMINATES THE CLOCK-INDUCED TRANSIENT NOISE PROBLEM ASSOCIATED WITH THE COMPARATORS AND (2) IT ENABLES SMALLER DEVICES TO BE USED FOR THE COMPARATORS TO SAVE POWER WITHOUT SACRIFICING THE INPUT BANDWIDTH. THE E/D GAAS TECHNOLOGY WILL MINIMIZE THE POWER CONSUMPTIONS OF THE 6-BIT A/D CONVERTER TO 400MW. THE E/D LATCHING COMPARATORS PROVIDE HIGH GAIN AND REDUCE THE COMPARATOR OFF-SET VOLTAGE DOWN TO 15 MV, THUS MAKING THE 6-BIT DYNAMIC RANGE RELIZABLE.

* information listed above is at the time of submission.

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