Investigation and Optimization of Auxiliary Cathode for the Secondary-Emission Cold-Cathode Magnetrons

Conference: GeMIC 2008 - German Microwave Conference
03/10/2008 - 03/12/2008 at Hamburg-Harburg, Germany

Proceedings: GeMIC 2008

Pages: 4Language: englishTyp: PDF

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Avtomonov, Mykola I.; Sergiy V. Sosnytskiy; Vavriv, Dmytro M. (Institute of Radio Astronomy of the National Academy of Sciences of Ukraine, Kharkov, Ukraine)

A theoretical study of properties of the auxiliary cathode of magnetrons with cold secondary-emission cathodes is performed. Different methods of providing a spatial-charge limited emission from the auxiliary cathode are studied in order to eliminate the temperature dependence of the emission current. New designs of the auxiliary cathode are proposed to provide a better emission current stability with respect to temperature variations, as compared to the currently used cathodes in spatialharmonic mm-wavelength magnetrons.