A study of oven magnetrons toward a transmitter for space applications

Author

Mitani, Tomohiko ; Kawasaki, Haruo ; Shinohara, Naoki ; Matsumoto, Hiroshi

Author_Institution

Res. Inst. for Sustainable Humanosphere, Kyoto Univ., Uji, Japan

fYear

2009

fDate

28-30 April 2009

Firstpage

323

Lastpage

324

Abstract

The objective of the present study is to evaluate 2.45 GHz and 5.8 GHz oven magnetrons, toward a transmitter for space applications. Dc-rf efficiency and frequency spectrum of the oven magnetrons were measured. Significant improvement of efficiency and reduction of back bombardment energy must be necessary for the present 5.8 GHz oven magnetron to facilitate thermal management in space and to improve the frequency spectrum, respectively. Thermal vacuum tests of a 2.45 GHz oven magnetron were also conducted. From experimental results, the dc-rf efficiency was mainly dependent on magnet temperature. Therefore, thermal control of the magnets and pole pieces is essential for the highly-efficient magnetron operation in space.

Keywords

aerospace instrumentation; magnetrons; magnets; transmitters; back bombardment energy; dc-rf efficiency; frequency 2.45 GHz; frequency 5.8 GHz; frequency spectrum; magnet temperature; oven magnetrons; pole pieces; space applications; thermal management; thermal vacuum test; transmitter; Anodes; Electromagnetic heating; Frequency measurement; Magnetrons; Microwave ovens; Satellites; Space exploration; Space power stations; Thermal management; Transmitters; low cost; oven magnetron; space applications; vacuum experiments;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2009. IVEC '09. IEEE International

Conference_Location

Rome

Print_ISBN

978-1-4244-3500-5

Electronic_ISBN

978-1-4244-3501-2

Type

conf

DOI

10.1109/IVELEC.2009.5193408

Filename

5193408