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Traveling-Wave Couplers for Longitudinal Beam-Type Amplifiers

Gould, Roy W. (1959) Traveling-Wave Couplers for Longitudinal Beam-Type Amplifiers. Proceedings of the IRE, 47 (3). pp. 419-426. ISSN 0096-8390. http://resolver.caltech.edu/CaltechAUTHORS:GOUprocire59

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Abstract

The equations governing traveling-wave interaction between an electron beam and a slow-wave circuit are formulated in terms of amplitudes of circuit mode and slow and fast space charge modes. The resulting equations are solved to find expressions for the matrix which relates the mode amplitudes at the output of the traveling-wave coupler to the mode amplitudes at the input. The properties of this matrix are discussed and numerical values given for Kompfner Dip. Matrices for velocity jumps and drift regions are also given, and the characteristics of couplers which are preceded by or followed by a drift region and velocity jump are discussed. It is shown that necessary and sufficient conditions for the removal of beam noise from the fast space-charge wave by any lossless coupler are that, for a circuit input, there be no circuit output (M11 = 0) and no slow space-charge wave output (M21 = 0). These results are then applied to the design of fast space-charge wave couplers for longitudinal beam type parametric amplifiers.


Item Type:Article
Additional Information:© Copyright 1959 IEEE. Reprinted with permission. Original manuscript received by the IRE, August 25, 1958; revised manuscript received, December 19, 1958. The research on microwave electronics was supported by the Office of Naval Research and the Sperry Rand Corporation. The author wishes to express his sincere appreciation to D.C. Forster for several illuminating discussions of this problem, to K. Hebert for writing the program for machine computation of the matrix elements, and to K. Lock for obtaining the differential analyzer solutions.
Record Number:CaltechAUTHORS:GOUprocire59
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:GOUprocire59
Alternative URL:http://dx.doi.org/10.1109/JRPROC.1959.287177
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9819
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:19 Mar 2008
Last Modified:26 Dec 2012 09:53

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