V.A. Tsarev - Dr. Sc. (Eng.), Professor, Department «Electronic Devises and Equipment», Yuri Gagarin State Technical University of Saratov. E-mail: tsarev_va@mail.ru D.A. Nesterov - Post-graduate Student, Department «Electronic Devises and Equipment», Yuri Gagarin State Technical University of Saratov. E-mail: enlucioro@gmail.com

For the first time, a common methodology for the design of new types of quasi-fractal double-gap resonators for powerful multi-beam klystrons was proposed on a basis of fractal geometry methods. A three-dimensional computer modeling was performed for the same operation conditions of single-gap and double-gap resonators. In a result of studies, there were defined the conditions, under which a klystron with a new type of resonators has not self-excitation. It was shown that in the decimeter wavelength range fractal resonators have approximately 1.4 smaller transverse dimensions, which allows one to obtain more favorable conditions for focusing of multi-beam electron flow, to reduce the weight and dimensions of the focusing solenoid.

 

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