Patent ID: 8723419
Filing Date: 2014-05-13
Classification: H01J

Abstract:
1. A magnetron comprising: an anode cylinder comprising a plurality of anode vanes disposed at a predetermined interval on an inner peripheral surface thereof; a center lead comprising a first linear portion, a second linear portion which is disposed parallel to the first linear portion and which is disposed out of alignment with the first linear portion in a plane perpendicular to an axial direction of the anode cylinder, and a bent portion which connects the first linear portion to the second linear portion; and a cathode filament which is supported by the center lead within the anode cylinder and which is placed coaxially with the anode cylinder, wherein the center lead is formed so as to become bent between the first linear portion and the second linear portion by the bent portion, and wherein a position of one anode vane closest to the bent portion is higher than a position of another anode vane with respect to the axial direction of the anode cylinder.