Helix traveling wave tubes with reduced gain variation

Details Helix traveling wave tubes with reduced gain variation Helix traveling wave tubes with reduced gain variation

1980-09-02

1982-11-09

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 36, 315 393, H01J 2534

Patent

active

043587046

ABSTRACT:
In a traveling wave tube (TWT) using an interaction circuit of the helix-derived type, the gain of the tube normally varies significantly over the passband. The invention provides a simple method of reducing the gain variation together with a reduction in the noise power density produced at the output of the tube. This is accomplished by affixing a nonresonant terminated transmission line such as a meander line on at least one of the dielectric rods used to support the helix.

REFERENCES:
patent: 3433999 (1969-03-01), Espinosa
patent: 3437866 (1969-04-01), Hentschel
patent: 3510720 (1970-05-01), Putz
patent: 3538377 (1970-11-01), Slocum
patent: 3832593 (1974-08-01), Gross
patent: 4158791 (1979-06-01), Lien et al.
patent: 4282457 (1981-08-01), Harper
patent: 4292567 (1981-09-01), Fritchle et al.
patent: 4296354 (1981-10-01), Neubauer

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