RESEARCH ON MILLIMETER FERROMAGNETIC TYPE PARAMETRIC AMPLIFIER
Abstract
Work has continued on the parallel-pumped magnetodynamic amplifier utilizing the dielectric rod uniform precessional mode resonance. In an initial analysis, the pump power has been com puted and is presented in curve form in terms of the dielectric resonator Q and ferrimagnetic line width. The computer solution is given for the propagation characteristics of a dielec tric rod. The curves for the dielectric constant of most immediate interest (epsilon 13.5) are corroborated by experimental spectroscopy of Stycast. Dielectric continuity with YIG makes this material appealing for the design of resonant structures capable of supporting simul taneous electromagnetic and magnetostatic resonances. Results of loss tangent measurements of Stycast and other materials are given for 70 kmc and scale frequencies. Ways of coupling energy into the dielectric and magnetostatic modes were studied; experiments are discussed which resulted in the decision to couple to the pump mode from an iris in the side of the wave guide into the end of the rod and to couple to the YIG sphere directly from the side. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1963
- Accession Number
- AD0413554
Entities
People
- John D. Cowlishaw
- Robert A. Moore
Organizations
- Westinghouse Electric Corporation