Traveling wave tube

Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Discharge device load with distributed parameter-type...

Reexamination Certificate

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C315S039000, C333S157000, C333S156000

Reexamination Certificate

active

06917162

ABSTRACT:
A slow wave circuit (10, 110) of a traveling wave tube includes a three-dimensional conductive structure (30, 130). A dielectric film (36, 136) coats selected portions of the three-dimensional conductive structure (30, 130). An outer housing (12, 14, 112, 114) surrounds the three-dimensional conductive structure (30, 130) . The outer housing (12, 14, 112, 114) includes interior surfaces that connect with the dielectric film (36, 136). In a method for generating or amplifying microwave energy, a three-dimensional conductive structure is laser micromachined to define a selected generally periodic pattern thereon. The conductive structure is arranged inside a generally hollow barrel. An electron beam passes through the generally hollow three-dimensional structure and interacts with the conductive structure and the generally hollow barrel to generate or amplify the microwave energy.

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