公开(公告)号：JP2008028905A

公开(公告)日：2008-02-07

申请号：JP2006201882

申请日：2006-07-25

Applicant: Nec Microwave Inc ,  Necマイクロ波管株式会社

Inventor： SOGA KAZUHITO ,  NEMOTO AKIHIKO

IPC: H01P5/103

CPC classification number: H01P5/103

Abstract: PROBLEM TO BE SOLVED: To provide a coaxial waveguide conversion circuit which makes a contact state between a coaxial internal conductor and a waveguide matching component better than the existing structure, and increases heat radiation from the travelling wave tube to the waveguide.
SOLUTION: A fitting hole 207b of a single waveguide matching component 207A is a tapered round hole, and the hole diameter becomes thinner towards the tip of the component. In addition, an aperture diameter of the fitting hole 207a on the tip side of the component 207A is larger than the tipmost diameter of the coaxial internal conductor 205, and smaller than the diameter of the main body of the coaxial internal conductor 205. Consequently, when the coaxial internal conductor 205 is inserted into the fitting hole 207a of the waveguide matching component 207A; each cantilever support 207c divided by slots transforms matching the outer diameter of the coaxial internal conductor 205, and keeps a good contact state with the coaxial internal conductor 205 by its spring nature.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种同轴波导转换电路，其使得同轴内部导体和波导匹配部件之间的接触状态优于现有结构，并且增加从行波管到波导的热辐射。 解决方案：单个波导匹配部件207A的装配孔207b是锥形圆孔，并且孔直径朝向部件的尖端变薄。 此外，部件207A的前端侧的嵌合孔207a的开口直径大于同轴内部导体205的最前端的直径，小于同轴内部导体205的主体的直径。因此， 当同轴内部导体205插入到波导匹配部件207A的装配孔207a中时， 由槽划分的每个悬臂支撑件207c转换匹配同轴内部导体205的外径，并且通过其弹簧性质与同轴内部导体205保持良好的接触状态。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2009016240A

公开(公告)日：2009-01-22

申请号：JP2007178238

申请日：2007-07-06

Applicant: Nec Microwave Inc ,  Necマイクロ波管株式会社

Inventor： SOGA KAZUHITO ,  CHIBA TORU

IPC: H01J23/40 ,  H01J23/50

CPC classification number: H01J23/50 ,  H01J25/34

Abstract: PROBLEM TO BE SOLVED: To provide a traveling wave tube suppressing heat conductivity reduction of a contact part between a metal tape and a coaxial inner conductor to suppress a reduction in heat radiating capacity of heat from a helix.
SOLUTION: The traveling wave tube includes the helix realizing mutual action of an externally input high frequency signal and electron beams, the U-shaped metal tape attached to an end of the helix at its bottom and the coaxial internal conductor inputting/outputting the high frequency signal to/from the helix.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种抑制金属带和同轴内导体之间的接触部分的导热率降低的行波管，以抑制来自螺旋线的热量的散热能力的降低。

解决方案：行波管包括实现外部输入的高频信号和电子束的相互作用的螺旋线，附接到其底部的螺旋的末端的U形金属带和同轴内部导体输入/输出 来自/来自螺旋的高频信号。 版权所有（C）2009，JPO＆INPIT