Broad-band traveling-wave tube with offsets on pole pieces and s

Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure

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315 393, H01J 2534

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active

057540063

ABSTRACT:
A broad-band traveling-wave tube is provided, which contains a cylindrical waveguide made of a plurality of pole pieces and a plurality of spacers alternately arranged along its axis. A helix is placed in the waveguide to extend along the axis of the waveguide. The helix is held by helix supports not to be contacted with the waveguide. The inner wall of the waveguide has a plurality of offsets arranged at intervals along the axis of the waveguide. A bore-diameter-varying portion can be created inside a waveguide without mounting vanes.

REFERENCES:
patent: 3293478 (1966-12-01), Winkler
patent: 3398314 (1968-08-01), Buck
patent: 3551729 (1970-12-01), Bradford
patent: 3654509 (1972-04-01), Scott et al.
patent: 3809949 (1974-05-01), Scott
patent: 3885192 (1975-05-01), Esterson et al.
Kumar et al., "Modeling of a Vane-Loaded Helical Slow-Wave Structure for Broad-Band Traveling-Wave Tubes", IEEE Transactions on Electron Devices, vol. 36, No. 9, Sep. 1989, pp. 1991-1999.
Patent Abstracts of Japan, vol. 13, No. 8 (E-702), Jan. 10, 1989 (JPA 63218123).

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