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

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 6815
Amount: $495,225.00
Phase: Phase II
Program: SBIR
Awards Year: 1989
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Amerasia Technology Inc.
620-1 Hampshire Rd, Westlake Village, CA, 91361
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr Binneg Y Lao
 () -
Business Contact
Phone: () -
Research Institution
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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