发明名称 |
Microwave tubes provided with permanent magnet type magnetic circuits |
摘要 |
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.
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申请公布号 |
US4207494(A) |
申请公布日期 |
1980.06.10 |
申请号 |
US19780889119 |
申请日期 |
1978.03.22 |
申请人 |
NIPPON ELECTRIC CO LTD;NIPPON HOSO KYOKAI |
发明人 |
HATAKENAKA, FUJIO;MORISHITA, YOJI;MURATA, SHIGEMOTO;SATO, HISAAKI;TSUCHIYA, ISAMU |
分类号 |
H01J23/027;H01J23/087;(IPC1-7):H01J23/08 |
主分类号 |
H01J23/027 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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