Title:
COAXIAL MAGNETRON IMPROVED FOR STARTING
Document Type and Number:
Japanese Patent JPS59141148
Kind Code:
A
Abstract:
The cathode of a coaxial magnetron has a cylindrical electron emitter with a radially extending projection which is asymmetrical with respect to the axis of the emitter. The projection suppresses starting of the magnetron in the TE121 mode and reduces starting jitter. In a preferred embodiment, the projection is in the form of a circumferential ridge extending around approximately one-half the circumference of the cylindrical surface and is centrally located thereon. The projection is oriented at 45 degrees with respect to the output of the magnetron. The power output of the magnetron is not substantially reduced.
Inventors:
UIRIAMU AREN GERAADO
Application Number:
JP493584A
Publication Date:
August 13, 1984
Filing Date:
January 17, 1984
Export Citation:
Assignee:
VARIAN ASSOCIATES
International Classes:
H01J23/05; (IPC1-7): H01J1/13; H01J23/04
Attorney, Agent or Firm:
Sumio Takeuchi