Traveling wave tube with thermally-insensitive loss button struc

Details Traveling wave tube with thermally-insensitive loss button struc Traveling wave tube with thermally-insensitive loss button struc

1992-10-29

1995-02-21

Lee, Benny T.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 393, 333 81R, H01J 2330

Patent

active

053919637

ABSTRACT:
A loss button for a traveling wave tube. The front and rear planar surfaces of the ceramic pill-shaped button body are of coated metallic composition. The periphery is uncoated to permit r.f. energy to enter the button through thee cavity of the planar, metallic spacer into which the button is inserted. By coating the body surfaces, the button itself acts as a resonant cavity for attenuation of a predetermined bandwidth so that the dimensional changes that occur during heating to the surrounding and adjacent metallic elements, including the cavity in the spacer for receiving the button and the adjacent braze washers, will not affect the attenuation band of the tube.

REFERENCES:
patent: 3221204 (1965-11-01), Hant et al.
patent: 4001630 (1977-01-01), Gross
patent: 4143341 (1979-03-01), Gross
patent: 4307322 (1981-12-01), Chaffee et al.

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