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