Title:
MAGNETRON
Document Type and Number:
Japanese Patent JP2004103550
Kind Code:
A
Abstract:
To provide a magnetron with an improved oscillation efficiency, sufficiently lowering an unnecessary radiation and preventing the deterioration of the oscillation efficiency.
The magnetron is characterized in that, provided that a radius of an outer periphery of a minor-diameter anode strap 49 of the magnetron 41 is Rs1, a radius of an inner periphery of a major-diameter anode strap 51 is Rs2, a radius of an inner periphery inscribed at the tip of anode vanes 47 is Ra, and a radius of a plane part adjacent to each anode vane at the center of a magnetic pole piece is Rp; Ra, Rs1, Rs2 and Rp are set to satisfy formula (1): 1.85Ra≤(Rs1+Rs2)/2≤1.96Ra, and formula (2): Rs1∠Rp∠Rs2.
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Inventors:
YOSHIHARA MASAKUNI
TSUKADA TOSHIYUKI
OGURI HIDEKI
SAITO YOSHISUKE
ISHII TAKESHI
TSUKADA TOSHIYUKI
OGURI HIDEKI
SAITO YOSHISUKE
ISHII TAKESHI
Application Number:
JP2003110390A
Publication Date:
April 02, 2004
Filing Date:
April 15, 2003
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H01J23/00; H01J23/20; H01J23/15; H01J23/22; H01J25/00; H01J25/50; H01J25/587; H05B6/00; H05B6/64; (IPC1-7): H01J23/20
Attorney, Agent or Firm:
Shohei Oguri
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Yuriko Kuriu
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Yuriko Kuriu