Cathode for magnetron
AssigneeNew Japan Radio Co., Ltd.
InventorsKiyoshi Kishiki, Yukio Torikai, Toshihiko Yamashita, Hideyuki Obata
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Abstract
A cathode for a magnetron having concave/convex portions on a surface of a cylindrical base metal with thermionic emitting materials being fixedly attached to concave portions from among the concave/convex portions. The convex portions of the concave/convex portions are arranged to be inclining. It is enabled to effectively protect thermionic emitting materials from inverse impulse of electrons or ions and from oscillation to thereby restrain consumption and omission of these thermionic emitting materials and to decrease higher harmonics of radiation.
Claims9
A magnetron cathode comprising:
- a cylindrical surface of a base metal, the surface including concave grooves and convex portions disposed between the grooves;
- and
- thermionic emitting materials fixedly attached and filled into the grooves;
- wherein each of the convex portions is inclined, as a whole, to the surface.
Dependencies are inferred from the claim text.