Multiple-beam microwave tube with groups of adjacent cavities
AssigneeThomson Tubes Electroniques
InventorGeorges Mourier
Life of this patent
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Abstract
Disclosed is a microwave tube with n (where n is an integer greater than one) parallel, longitudinal electron beams distributed on a ring centered on an axis XX'. The electron beams go through several groups of n cavities. So that each group may resonate on a single frequency, it is provided that the cavities of one and the same group will work in their dominant mode, at one and the same frequency, and will get excited in phase. To this end, the cavities of the input group are excited in phase by an appropriate device external to the tube. The device can be applied to multiple-beam klystrons working at high frequencies.
Claims14
A microwave tube disposed around an axis XX' comprising:
- n, where n=an integer number greater than 1, means for providing n electron beams parallel to the axis and surrounding said axis, a succession of groups of cavities aligned along the axis XX', said succession including an input group, each group comprising n adjacent cavities resonating at a same frequency, each beam respectively aligned to pass through a corresponding cavity in each group, and external means coupled at least to a cavity of the input group, means for providing phase excitation signal into each cavity of the input group, and said phase excitation signal interacts with the n electron beams such that the n electron beams are the sole means for coupling the interacting phase excitation signal to successive groups and each group resonates at a single frequency.
Dependencies are inferred from the claim text.