RESEARCH ON MILLIMETER FERROMAGNETIC TYPE PARAMETRIC AMPLIFIER
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1961
- Accession Number
- AD0260790
Entities
People
- Milton L. Laflen
- Robert A. Moore
Organizations
- Walter Reed Army Institute of Research