| 摘要 |
PROBLEM TO BE SOLVED: To provide an electron tube capable of restraining cost increase while achieving a wider bandwidth. SOLUTION: The electron tube, equipped with a helix as a high-frequency circuit making an electron beam interact with high frequency signal, is structured to have a shell enveloping the helix, and a plurality of pillars supporting the helix in the shell with a conductive material arranged at a part abutted with an inner wall of the shell, with the part contacting the helix covered with a dielectric. COPYRIGHT: (C)2006,JPO&NCIPI
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