Title :
Noise Reduction Effects of an Oven Magnetron with a Cathode Shield
Author :
Mitani, T. ; Shinohara, N. ; Matsumoto, H. ; Aiga, M. ; Kuwahara, N. ; Ishii, T.
Author_Institution :
Res. Inst. for Sustainable Humanosphere, Kyoto Univ.
Abstract :
A magnetron with a metallic cathode shield on the high voltage (HV) input side is newly designed for the purpose of reducing spurious noises generated from an oven magnetron. We experimentally found that the newly-designed magnetron suppressed sideband noises around the carrier frequency up to -10dB compared to the conventional magnetron. Moreover, both spurious noises in high frequency bands (4GHz~14GHz) and line noises in low frequency bands (~1 GHz) from the newly-designed magnetron were reduced up to -30dB compared to the conventional one
Keywords :
cathodes; interference suppression; magnetrons; noise; 4 to 14 GHz; line noises; metallic cathode shield; noise reduction effects; oven magnetron; sideband noises suppression; spurious noises; Cathodes; Frequency; Low-frequency noise; Magnetic separation; Magnetic shielding; Noise figure; Noise level; Noise reduction; Ovens; Semiconductor device noise; cathode shield; magnetron; noises;
Conference_Titel :
Vacuum Electronics Conference, 2006 held Jointly with 2006 IEEE International Vacuum Electron Sources., IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
1-4244-0108-9
DOI :
10.1109/IVELEC.2006.1666330
