Accession Number:

AD0781234

Title:

A Digitally Controlled Time Varying Gain Amplifier,

Descriptive Note:

Corporate Author:

TEXAS UNIV AUSTIN APPLIED RESEARCH LABS

Personal Author(s):

• Rohde,David F.

Report Date:

1974-03-18

Pagination or Media Count:

91.0

Abstract:

The project concerns the design, testing, and application of a digitally controlled time varying gain amplifier. Because the system has direct use in pulse sonar receivers, the acoustic parameters which enter into the design considerations are discussed. The effects of operational amplifier limitations on the system are developed, and several methods for digitally controlling the amplifier gain are studied. One typical application is developed and a particular circuit design, as well as test data from system verification tests, is presented. Author

Descriptors:

• *Amplifiers
• *Sonar receivers
• Gain
• Digital systems
• Control
• Feedback amplifiers
• Integrated circuits
• Switching circuits
• Variations

Subject Categories:

• Electrical and Electronic Equipment
• Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE