ACTIVE ACOUSTIC DEVICES.

Sakiotis, N. G.; Brendecke, W. H.; Hickernell, F. S.

ACTIVE ACOUSTIC DEVICES.

Active / Technical Report | Accession Number: AD0620854 |

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Abstract:

A heat sink design has been demonstrated which maintains the maximum crystal temperature rise to less than 10 C above ambient for a range of values of drift field power density required for useful continuous acoustic gain. The work on thin film transducers has yielded processes and techniques for the deposition of insulating CdS films on CdS substrates resulting in conversion losses in the range of 6-8 db and bandwidths of the order of 50 in the frequency of 100-300 mcsec. Bonded quartz transducers operating in the first overtone mode at 180 mcsec with conversion losses of less than 10 db were demonstrated. Acoustic amplifier utilizing CdS material was shown to operate satisfactorily at maximum crystal temperatures of at least 70 C. Author

Author(s):

Sakiotis, N. G. ; Brendecke, W. H. ; Hickernell, F. S.

Author Organization(s):

MOTOROLA INC PHOENIX ARIZ SEMICONDUCTOR PRODUCTS DIV

Descriptive Note:

Quarterly rept. no. 3, Jan-31 Mar 65,

Supplementary Note:

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

RADC-TR-65-203

Contract/Grant Number(s):

AF30 602 3478

Task Number(s):

557802

Project Number(s):

5578

Monitor Series:

TR-65-203

Subject Terms

Communities of Interest:

Energy and Power Technologies

Descriptor(s):

(*TRANSDUCERS, SEMICONDUCTOR DEVICES), (*ACOUSTIC EQUIPMENT, SEMICONDUCTOR DEVICES), (*SEMICONDUCTOR DEVICES, TRANSDUCERS), SEMICONDUCTING FILMS, CADMIUM COMPOUNDS, SULFIDES, PIEZOELECTRIC CRYSTALS, SOLID STATE PHYSICS, VAPOR PLATING, VACUUM, GAIN, BERYLLIUM COMPOUNDS, OXIDES, QUARTZ, VERY HIGH FREQUENCY, SURFACE PROPERTIES, AMPLIFIERS, THERMAL CONDUCTIVITY, ULTRASONIC PROPERTIES

Report Date:

1965 Aug 01