ANALYSIS OF THE EFFECT OF FERRITE ON THE INTERACTION FIELDS IN A TRAVELING-WAVE TUBE.
Abstract
An analysis was made of the effect on the interaction fields outside the helix of a traveling-wave tube when a ferrite cylinder, d-c magnetized in the circumferential direction, is placed inside the helix. It is shown that the main effect is the introduction of a slowing factor for the phase velocity of the slow waves. This phase velocity is independent of the strength of the d-c magnetic field, but is proportional to (1 + epsilon/epsilon sub o) to the 1/2 power, where epsilon/epsilon sub o is the relative dielectric constant of the ferrite. It is also shown that the backward-wave modes are cut off for certain values of d-c magnetic field. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1967
- Accession Number
- AD0650472
Entities
People
- Arthur H. Gottfried
Organizations
- United States Army Communications-Electronics Command