Microwaves pp 31-34 | Cite as

An electrostatically focused klystron amplifier

  • J. R. Hechtel
  • A. Mizuhara


The role which the klystron amplifier is playing in the field of radar, communications and other systems such as linear accelerators has proven this device to be invaluable. Because a klystron is a device employing a long and slender electron beam, a means of focussing this beam becomes necessary. In practice, this focussing is accomplished with either permanent magnets or electromagnets. Both have their disadvantages. Magnets are not only heavy, bulky and have stray magnetic fields, but also add to the initial cost of a system. The electromagnet, in addition, requires a power supply which reduces the overall efficiency of the system and is also inherently heavy and bulky. The use of aluminum wire and foil for the electromagnet winding has not significantly reduced the weight and size. The elimination of focussing magnets would, therefore, be highly desirable. This is especially true, if not mandatory, in mobile, airborne and space systems where space and available power are at a premium and weight must be kept at an absolute minimum.


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  1. [1]
    J.R. HECHTEL and J.A. SEEGER, Accuracy and Limitations of the Resistor Network Used for Solving L aplace’s and Poisson’s Equations, Proceedings of I.R.E., May 1961, Vol. 49, No.5, pp. 933–940MathSciNetCrossRefGoogle Scholar
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    J.R. HECHTEL, Electron Ray Tracing by Means of Resistor Network and Digital Computer, I. R. E. Transaction of the Professional Group on Electron Devices, Vol.ED-9, No.1, January 1962Google Scholar
  3. [3]
    J.R. HECHTEL, D. P. BRAUCH and A. MIZUHARA, New Numerical Methods in Electron Dynamics, paper presented at the International Congress on Microwave Tubes, Scheveningen, Holland, 3–7 September 1962Google Scholar

Copyright information

© N.V. Uitgeversmaatschappij Centrex 1963

Authors and Affiliations

  • J. R. Hechtel
    • 1
  • A. Mizuhara
    • 1
  1. 1.Research Laboratory, Litton Electron Tube CorporationSan CarlosUSA

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