Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Distributed parameter resonator-type magnetron
Reexamination Certificate
2011-03-29
2011-03-29
Owens, Douglas W (Department: 2821)
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Distributed parameter resonator-type magnetron
C315S039570, C315S039590
Reexamination Certificate
active
07915827
ABSTRACT:
A microwave generation device includes: a magnetron having a cathode containing a filament and an anode containing a hollow resonator arranged to oppose to each other; a filament current measuring unit; and an application voltage measuring unit for measuring voltage applied to the filament. Based on the current and the voltage obtained by the current measuring unit and the voltage measuring unit, a resistance value calculation unit obtains a resistance value of the filament. A temperature calculation unit calculates the filament temperature from the resistance value and the resistance-temperature dependent characteristic. A filament power source is controlled by a power control unit so that the filament temperature is within a predetermined temperature range.
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Kasai Shigeru
Osada Yuki
Chen Jianzi
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Owens Douglas W
Tokyo Electron Limited
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