NDLI: High-Q toroidal cavities for high frequency klystrons

Content Provider	IEEE Xplore Digital Library
Author	Branch, G.M.
Copyright Year	1972
Description	Author affiliation: General Electric Company, Schenectady, New York (Branch, G.M.)
Abstract	A toroidal cavity developed for a 4-KW 12 GHz satellite-borne television transmitter klystron is described. The cavity has an internal Q 40 percent higher than that of a conventional cylindrical doubly-reentrant cavity, thus yielding higher circuit efficiency and conserving energy which cannot be recovered in multi-stage depressed potential beam collectors. As a result of optimization studies with a digital computer program for obtaining cavity field distributions by a relaxation method and for computing the intrinsic cavity parameters R/Q and Q δ/λ (where R is the cavity interaction gap shunt impedance, Q the cavity bandwidth parameter f/Δf, and δ/λ the skin-depth to wavelength ratio), a particular cavity configuration with conical reentrant tunnel tips and toroidal walls is shown to provide good thermal characteristics and mechanical rigidity as well as low internal losses. Methods of die-coining toroidal cavities for centimeter and millimeter wavelength klystrons are described and a comparison between theoretically predicted and experimentally measured properties of toroidal cavities is given.
Starting Page	150
Ending Page	150
File Size	79807
Page Count	1
File Format	PDF
DOI	10.1109/IEDM.1972.249367
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1972-12-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Klystrons Distributed computing Millimeter wave measurements TV Transmitters Circuits Optimization methods Relaxation methods Impedance
Content Type	Text
Resource Type	Article

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