Accession Number:

AD0416641

Title:

PARAMETRIC AMPLIFICATION AT SONAR FREQUENCIES (40-100 KC),

Descriptive Note:

Corporate Author:

NAVY MINE DEFENSE LAB PANAMA CITY FLA

Personal Author(s):

Report Date:

1963-09-01

Pagination or Media Count:

15.0

Abstract:

A literature search and study was conducted to determine the feasibility of a low frequency parametric amplifier for use at frequencies in the 40- to 100-kc range encountered in sonar devices. One model based upon the microwave balanced modulator configuration Magic-T was constructed antested. A gain of 24 db at 40 kc was achieved with a minimum detectable signal of -133 db1 volt. The bandwidth was approximately 1000 cycles at 40 kc. A possible configuration using uniform Traveling-Wave Parametric Amplifier principles and the theory of passive distributed-coupling transducers to achieve an acoustic transducer with gain is dis cussed briefly. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE