Time-Domain Particle-in-Cell Modeling of Delayed Feedback Klystron Oscillators

Author

Emelyanov, Valeriy V. ; Girevoy, Ruslan A. ; Yakovlev, Anton V. ; Ryskin, N.M.

Author_Institution

Dept. of Nonlinear Phys., Saratov State Univ., Saratov, Russia

Volume

61

Issue

6

fYear

2014

fDate

41791

Firstpage

1842

Lastpage

1847

Abstract

Time-domain modeling of vacuum tubes is important for theoretical analysis of spurious oscillation, amplification and generation of short pulses and complex multifrequency, or chaotic signals. In this paper, a time-domain model of a klystron delayed feedback oscillator is presented. The model is based on the nonstationary Vainshtein theory of cavity excitation and the 1-D particle-in-cell method for simulation of electron beam dynamics. The results of simulation are presented for an S-band four-cavity klystron with delayed feedback, as well as for a miniaturized sub-terahertz reflex klystron. The developed code allows sufficiently fast and accurate calculation of output characteristics of klystron-type oscillators.

Keywords

electron beams; excited states; klystrons; microwave oscillators; time-varying networks; S-band four-cavity klystron; cavity excitation; chaotic signals; complex multifrequency; delayed feedback klystron oscillators; electron beam dynamics; nonstationary Vainshtein theory; spurious oscillation; sub-terahertz reflex klystron; time-domain particle-in-cell modeling; vacuum tubes; Cavity resonators; Klystrons; Mathematical model; Numerical models; Oscillators; Power generation; Time-domain analysis; Multiple cavity klystron; chaos; delayed feedback; particle-in-cell (PIC); reflex klystron; self-modulation; time-domain modeling; time-domain modeling.;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2014.2302414

Filename

6739065