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Gain-Compensating Circuit For NDE and UltrasonicsHigh-frequency gain-compensating circuit designed for general use in nondestructive evaluation and ultrasonic measurements. Controls gain of ultrasonic receiver as function of time to aid in measuring attenuation of samples with high losses; for example, human skin and graphite/epoxy composites. Features high signal-to-noise ratio, large signal bandwidth and large dynamic range. Control bandwidth of 5 MHz ensures accuracy of control signal. Currently being used for retrieval of more information from ultrasonic signals sent through composite materials that have high losses, and to measure skin-burn depth in humans.
Document ID
19870000266
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Kushnick, Peter W.
(PRC Kentron, Inc.)
Date Acquired
August 13, 2013
Publication Date
June 1, 1987
Publication Information
Publication: NASA Tech Briefs
Volume: 11
Issue: 6
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
LAR-13543
Accession Number
87B10266
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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