Microwave tubes provided with permanent magnet type magnetic cir

Details Microwave tubes provided with permanent magnet type magnetic cir Microwave tubes provided with permanent magnet type magnetic cir

1978-03-22

1980-06-10

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 538, 315 35, H01J 2308

Patent

active

042074940

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.

REFERENCES:
patent: 3133226 (1964-05-01), Buck et al.
patent: 3297907 (1967-01-01), LaRue et al.
patent: 3324337 (1967-06-01), McCune et al.
patent: 3368102 (1968-02-01), Saharian
patent: 3394282 (1968-07-01), Schmidt
patent: 3450930 (1969-06-01), Lien
patent: 3930182 (1975-12-01), Bretting

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