Helix type traveling-wave tubes with auxiliary selective shieldi

Details Helix type traveling-wave tubes with auxiliary selective shieldi Helix type traveling-wave tubes with auxiliary selective shieldi

1978-10-23

1981-04-28

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

042648424

ABSTRACT:
A helix type traveling-wave tube comprises a conductive tubular envelope wherein a coaxial helix interaction structure is provided, the function of which is to shield the electromagnetic wave of the signal. By a proper arrangement of metallic conductive elements suitably applied upon dielectric support rods firmly inserted between the inner conductive surface of said tubular envelope and outer perimetrical surface of said helix, a selective shielding may be attained in order that the helix dispersions are almost null or even negative and the operative frequency band is remarkably extended with a substantially constant velocity of phase.

REFERENCES:
patent: 3387168 (1968-06-01), Beaver
patent: 3397339 (1968-08-01), Beaver et al.
patent: 3654509 (1972-04-01), Scott et al.
patent: 3809949 (1974-05-01), Scott
patent: 3832593 (1974-08-01), Gross
patent: 3903449 (1975-09-01), Scott et al.
patent: 3972005 (1976-07-01), Nevins, Jr. et al.
patent: 4005329 (1977-01-01), Manoly

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