Accession Number : AD0282945

Title :   EXPERIMENTAL INVESTIGATION OF TRANSMISSION-LINE REPRESENTATIONS OF MICROWAVE PERIODIC CIRCUITS

Corporate Author : STANFORD UNIV CALIF MICROWAVE LAB

Personal Author(s) : CARSWELL,MARY IRENE

Report Date : APR 1962

Pagination or Media Count : 1

Abstract : Research is presented on transmission line models of a type of periodically-loaded waveguide which is important to the design of high power traveling wave tubes and linear accelerators. A simple and well-known model, referred to as the single-line model, is descr bed in terms of a single transmission line periodically loaded ith shunt susceptances; the model has the limitation that direct coupling between neighboring irises is not accounted for when the simple one-port element is used to represent the network properties of a thin transverse iris. The model is then improved in such a way that this limitation is removed to a first order of approximation; the iris is assumed to behave as a shunt two-port network coupling smooth transmission lines having the properties of appropriate normal waveguide modes. This latter formulation of the two-port representation of a waveguide iris is new. It is found experimentally that the new model of the structure, referred to as the two-line model, covers a class of circuits used in practical applications. (Author)

Descriptors :   *TRANSMISSION LINES, *WAVEGUIDES, COUPLING CIRCUITS, LINEAR ACCELERATORS, MICROWAVE NETWORKS, TRAVELING WAVE TUBES, WAVEGUIDE COUPLERS, WAVEGUIDE IRISES

Distribution Statement : APPROVED FOR PUBLIC RELEASE