Low power schottky emitter

Details Low power schottky emitter Low power schottky emitter

2006-06-20

2006-06-20

Guharay, Karabi (Department: 2879)

Electric lamp and discharge devices

Electrode and shield structures

Point source cathodes

C313S275000, C313S271000, C445S050000, C445S046000

Reexamination Certificate

active

07064477

ABSTRACT:
A low input power consumption, compact thermal field emitter is suitable for use in electron beam systems, particularly those systems that use an array of electron beams or a miniature electron beam system. The thermal field emitter design reduces heat loss by reducing heat transfer to the base. To achieve reduced loses the design incorporates the use of high electrical resistivity, low thermal conductivity materials for construction of the filament posts and the filaments. Such materials further reduce heat loss and reduce input current requirements. In one embodiment, the base includes counterbores that reduce the heat conduction path between the filament posts and the base, and moves the contact area further from the filament.

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