Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Distributed parameter resonator-type magnetron
Patent
1998-05-29
2000-08-01
Bettendorf, Justin P.
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Distributed parameter resonator-type magnetron
315 3953, H01J 2354
Patent
active
060971541
ABSTRACT:
A method for designing a microwave oven magnetron includes design for a permissible range of a length of a choke for suppression of a harmonic higher than the fourth harmonic. The inventive magnetron includes; a cathode with a filament; a cylindrical metal anode around the cathode; a vane fixed onto the inner side of the anode for providing a plurality of resonant cavities radially directed toward the cathode; an antenna feeder having an outer diameter .PHI..sub.1 ; upper and lower magnets fixed to upper and lower yokes; and upper and lower magnetic poles which provide paths of a magnetic circuit. An anode seal having an opening whose inner diameter .PHI..sub.4 serves as a magnetic circuit path and a supporter of a body. A metal choke (having an inner diameter .PHI..sub.2, an outer diameter .PHI..sub.3, and a length La) is installed fixed onto the inner side of the anode seal and surrounds the antenna feeder in order to suppress over a fourth higher harmonic generated through the anode seal. The following numerical expression is used in design of .PHI..sub.1 -.PHI..sub.4 : ##EQU1## where La is from 3.0 to 4.2 mm and .lambda. is the wavelength of the harmonic to be suppressed.
REFERENCES:
patent: 4833367 (1989-05-01), Harada
patent: 5180946 (1993-01-01), Arga et al.
patent: 5894198 (1999-04-01), Miki et al.
Bettendorf Justin P.
LG Electronics Inc.
LandOfFree
Microwave oven magnetron design with a harmonic choke following does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microwave oven magnetron design with a harmonic choke following , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microwave oven magnetron design with a harmonic choke following will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-667160