NDLI: A low-power magnetron for microwave heating

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1956 International Electron Devices Meeting

1955 International Electron Devices Meeting

A low-power magnetron for microwave heating

Content Provider	IEEE Xplore Digital Library
Author	Smith, B.H.
Copyright Year	1957
Description	Author affiliation: Raytheon Manufacturing Co., Waltham, Mass. (Smith, B.H.)
Abstract	A primary design consideration for a commercial microwave heating unit is low cost for the oscillator tube, the power supply, and the associated control circuits. This paper describes a magnetron design which makes possible price reduction in all these areas. In order to achieve a magnetron with these characteristics, it was necessary to depart, to some degree, from the conventional magnetron geometry. These deparures from convention which will be described were of a mechanical and an electrical nature. They include: a new type of "dipole type output system whereby the anode radiates directly into the load waveguide, use of the high-voltage bushings as output windows, and an all-welded assembly which permits unitized tube assembly and removal of all packaging parts from the tube, incorporating them in the tube socket. In addition, this output sysem resulted in this magnetron having a high mode boundary which made possible operation from an unrectified, unfiltered, power supply. With all these characteristics designed into the tube, it will be pointed out how this magnetron was capable of passing rigid test specifications. The magnetron described was developed for operation in the S-band microwave heating band. It is possible to modify this magnetron in such a manner that it can work in the L-band microwave heating band without changing its operating characteristics or dimensions.
Starting Page	109
Ending Page	110
File Size	383779
Page Count	2
File Format	PDF
DOI	10.1109/IEDM.1957.187032
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1957-11-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electromagnetic heating Power supplies Assembly systems Costs Microwave oscillators Temperature control Microwave circuits Geometry Anodes Loaded waveguides
Content Type	Text
Resource Type	Article

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