公开(公告)号：US4207494A

公开(公告)日：1980-06-10

申请号：US889119

申请日：1978-03-22

Applicant: Fujio Hatakenaka ,  Hisaaki Sato ,  Isamu Tsuchiya ,  Shigemoto Murata ,  Yoji Morishita

Inventor： Fujio Hatakenaka ,  Hisaaki Sato ,  Isamu Tsuchiya ,  Shigemoto Murata ,  Yoji Morishita

IPC: H01J23/027 ,  H01J23/087 ,  H01J23/08

CPC classification number: H01J23/087

Abstract: In a microwave tube of the type wherein an electron beam emitted by an electron gun is focused and caused to interact with an input high frequency wave at a high frequency circuit unit by magnetic flux generated by a permanent magnet type magnetic circuit, and the electron beam after the interaction is collected by a hollow cylindrical collector, a leakage flux generating means is provided near the entrance of the collector for generating leakage flux acting upon the electron beam. The leakage flux is produced by providing a notch for a pole piece adjacent to the collector and connected to the high frequency circuit unit or by reducing the cross-sectional area of the pole piece for magnetically saturating the pole piece itself or by keeping the pole piece in contact only with a portion of one end of the permanent magnet.

Abstract translation: 在由电子枪发射的电子束聚焦并通过由永久磁铁型磁路产生的磁通在高频电路单元与输入高频波相互作用的微波管中，并且电子束 在通过中空圆柱形收集器收集相互作用之后，在集电体的入口附近提供泄漏通量产生装置，用于产生作用在电子束上的漏磁通。 泄漏磁通是通过为与集电器相邻的极片提供凹口而连接到高频电路单元，或通过减小极片的横截面积来使极片本身磁饱和或通过保持极片 仅与永磁体的一端的一部分接触。