公开(公告)号：JP2007287382A

公开(公告)日：2007-11-01

申请号：JP2006110806

申请日：2006-04-13

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

Inventor： MACHIDA TETSUO

IPC: H01J23/40 ,  H01J23/36

CPC classification number: H01P1/08 ,  H01J23/12 ,  H01J23/40

Abstract: PROBLEM TO BE SOLVED: To obtain stable VSWR characteristics in a use frequency range, and maintain dimensional accuracy of respective parts.
SOLUTION: This pillbox vacuum window comprises a disk-shaped ceramic 1, a metallized layer 2, a metal part 3, and a metal part 4. The disk-shaped ceramic 1 is arranged in a center of the pillbox vacuum window, and the metallized layer 2 is formed in an outer peripheral part. The metal part 3 includes a large diameter cylinder part 3a having an inner diameter approximately equal to an outer diameter of the disk-shaped ceramic 1, and a small diameter cylinder part 3b having a smaller inner diameter than that of the large diameter cylinder part 3a, and connected to the larger diameter cylinder part 3a to form a step part 3c on a connection part. The disk-shaped ceramic 1 is mounted on the step part 3c. The metal part 4 includes a cylindrical part 4a having an outer diameter approximately equal to the outer diameter of the disk-shaped ceramic 1. The cylinder part 4a is engaged with the step part 3c of the disk-shaped ceramic 1 with the disk-shaped ceramic 1 mounted on the step part 3c of the metal part 3.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：在使用频率范围内获得稳定的VSWR特性，并保持各部件的尺寸精度。

解决方案：该药盒真空窗包括盘形陶瓷1，金属化层2，金属部分3和金属部分4.盘形陶瓷1布置在药丸真空窗的中心， 并且金属化层2形成在外周部分中。 金属部3具有内径大致等于圆盘状陶瓷1的外径的大径圆筒部3a和内径小于大径圆筒部3a的内径的小径圆筒部3b 并且连接到较大直径的缸部3a以在连接部上形成台阶部3c。 盘状陶瓷1安装在台阶部3c上。 金属部件4包括具有与盘状陶瓷1的外径大致相等的外径的圆筒部4a。圆筒部4a与圆盘状陶瓷1的台阶部3c卡合， 陶瓷1安装在金属部件3的台阶部分3c上。版权所有（C）2008，JPO＆INPIT