Vacuum-tight window for microwave electron tube and travelling w

Details Vacuum-tight window for microwave electron tube and travelling w Vacuum-tight window for microwave electron tube and travelling w

1989-11-03

1991-04-02

Laroche, Eugene R.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 393, 333252, H01J 2342

Patent

active

050049526

ABSTRACT:
The disclosure concerns microwave tubes and, more particularly, travelling wave tubes wherein the region under vacuum is isolated from the external HF input/output circuits by vacuum-tight windows. The disclosed window consists of a ceramic cylinder, the two ends of which bear metallic flexible rings. This window is brazed to the cylindrical chamber of the part under vacuum by means of a clearance machined in the chamber, so that the chamber and the window are integrated and coaxial. The HF transmission through the window is achieved by means of an antenna formed by a metallic strip mounted, at right angles, on a metallic cylinder that fits the chamber. The device can be applied to power microwave tubes and, notably, to travelling wave tubes.

REFERENCES:
patent: 2611102 (1952-09-01), Bohlke
patent: 2692351 (1954-10-01), Morton
patent: 2785244 (1956-08-01), Dodds
patent: 2824289 (1958-02-01), Murdock
patent: 2867747 (1959-01-01), Murdock
patent: 2947907 (1960-08-01), Bodmer
patent: 3076156 (1963-01-01), Muller et al.
patent: 3195006 (1965-07-01), Sullivan et al.
patent: 4138625 (1979-02-01), Koyama et al.

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