| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To minimize influence from cathode oscillation to stabilize characteristics of a magnetron, specifically stabilize oscillatory frequencies in pulses. <P>SOLUTION: In a configuration where a heater 21 is disposed at an axial part in a cylindrical cathode sleeve 2, both ends of the heater 21 are fixed by end shields 4a, 4b, and the cathode sleeve 2 is supported by supporting electrode bodies 9 from an angled direction relative to the axial direction, an insulated member 27 for moving the center of gravity is provided so that the position of the center of gravity of the cathode is set at a position away from the axis of the cathode sleeve 2. The member 27 for moving the center of gravity, for example a member having a disc form with a circular cavity having a different axis from the axis of the cathode sleeve, reduces oscillations by moving the center of gravity in the disposed direction of the supporting electrode bodies with regard to the cathode sleeve axis. Also, a second insulation body 24 and a supporting metal member 25 are disposed at the end of a coil on the cathode potential side of the heater 21 so as to maintain weight balance of both ends of the cathode. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
