Accession Number:

AD0260790

Title:

RESEARCH ON MILLIMETER FERROMAGNETIC TYPE PARAMETRIC AMPLIFIER

Descriptive Note:

Corporate Author:

WALTER REED ARMY INST OF RESEARCH WASHINGTON D C

Personal Author(s):

Report Date:

1961-04-30

Pagination or Media Count:

1.0

Abstract:

The modified semistatic mode of parametric amplification was investigated to determine the mechanism responsible for its properties. Particular attention was given to the pump power efficiency. Although the power required by the medium is a very small fraction of a watt, the pump efficiency is so low that a power of several watts is required by the cavity. An alternate configuration is proposed in which a ferrimagnetic rod serves to support the electromagnetic as well as the magnetostatic resonances. This configuration should result in a more efficient utilization of the pump power. The propagation properties of electromagnetic waves along a longitudinally magnetized circular cylinder of ferrimagnetic material were investigated for this application. The properties of narrow-line-width garnets were measured by resonant cavity techniques except at the gyromagnetic resonant frequency. Line width measurements were conducted on a Magic-T bridge. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE