PHASE FOCUSING IN LINEAR-BEAM DEVICES
Abstract
The problem of phase focusing the electron clusters of linear-beam tubes is considered. In all these tubes, the continued conversion of d-c kinetic energy to r-f depends upon the successful maintenance of the center of gravity of the charge clusters in the proper phase relative to a collinear traveling wave. To the end of enhancing conversion efficiency the behavior of these devices was studied when spatially-varying parameters were inserted in either the circuit or the beam, allowing greater design control in the large-signal regions of the tubes. The detailed analysis was restricted to the travelingwave amplifier. The large-signal equations of this device were generalized to accommodate the spatially-varying parameters. Circuit velocity could be continuously varied through the velocity parameter, b, which is redefined as a function of distance. The beam can be reimbursed with additional d-c energy by application of a d-c gradient in the force equation. The theoretical results predict that tapering of the circuit velocity of a traveling-wave amplifier will bring certain advantages. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1961
- Accession Number
- AD0268678
Entities
People
- John G. Meeker
Organizations
- University of Michigan