Title: Electronic tube with cylindrical electrodes

Abstract: The present invention relates to an electronic tube with cylindrical electrodes. In tubes of this kind, where the cathode generally consisting of a wire mesh 1, the space located within same is tightly coupled with the other inter-electrode spaces of the tube. The invention, in order to avert parasitic resonances at the harmonics closest to the operating frequency, which can occur in said space in operation, provides for the arrangement in said space of a certain number of metal sleeves 8, 9 and 10 coaxial with the electrodes, constituting low-inductance coaxial line sections. Application to high-power, short-wave (20 MHz) triodes for transmitting applications.

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Inventors: Gerlach, Pierre (Paris, FR)

Application Number: 533716
Filing Date: 1974-12-17
Publication_date: 1976-03-09
Assignee: Thomson-CSF (Paris, FR)
Primary Class(es): 313/341 313/346R, 313/348
Other Classes:
US Patent Ref:

2289588	Jul, 1942	Miller	313/341.
2928978	Mar, 1960	Morton	313/341.
3287597	Nov, 1966	Smith	313/340.
3449616	Jun, 1969	Sarrois	313/348.
3742292	Jun, 1973	Gerlach et al.	315/39.

Other Refs:
Primary Examiner: Chatmon, Jr., Saxfield
Assistant Examiner:
Attorney: Plottel; Roland