Title :
High-power microwave generation from virtual cathode in foilless diode (vircator)
Author :
Nikolov, N.A. ; Kostov, Konstantin Georgiev ; Spasovsky, I.P.
Author_Institution :
Dept. of PHys., Sofia Univ.
fDate :
11/10/1988 12:00:00 AM
Abstract :
The authors investigate experimentally the microwave radiation generation in a foilless diode. The source of the radiation is a virtual cathode which is formed by the injection of excess current into the drift region. The behaviour of microwave power from an external guiding magnetic field is investigated for three cathode diameters. Symmetrical and nonsymmetrical TM modes are observed, and the wavelength of radiation is measured. The peak microwave power produced was 10±5 MW, which corresponds to 1% efficiency
Keywords :
cathodes; microwave generation; microwave tubes; 1 percent; 5 to 15 MW; TM modes; cathode diameters; drift region; excess current injection; external guiding magnetic field; foilless diode; microwave generation; peak microwave power; vircator; virtual cathode;
Journal_Title :
Electronics Letters
