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# Accession Number:

## ADA071888

# Title:

## Development of a Large Signal Computer Theory for TWT.

# Descriptive Note:

## Final technical rept. Oct 77-Nov 78,

# Corporate Author:

## HUGHES AIRCRAFT CO TORRANCE CALIF ELECTRON DYNAMICS DIV

# Report Date:

## 1979-06-01

# Pagination or Media Count:

##
50.0

# Abstract:

## The report describes the basic formulations used to express the large signal equations by means of polarization variables, and how these are implemented into a one-dimensional large signal theory of the TWT. The small signal approximation follows as a natural special case which is described by a separate set of equations. The solution of these by means of a separate computer routine gives the small signal response for the TWT and simultaneously furnishes a set of input parameters that are used in the subsequent large signal routine. The theory is formulated in terms of a set of basic circuit and beam parameters rather than the special TWT parameters used in conventional theory, i.e., the Pierce parameters. The Pierce parameters are not particularly well suited for use in the present model, which differs from the conventional model in several respects. Transformation of the basic parameters used in the present model to the Pierce parameters and vice versa, for interpretation and comparison of results can be done easily subsequent to the computational procedure.

# Distribution Statement:

## APPROVED FOR PUBLIC RELEASE

#