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A Nonlinear Transmission Line Model for the Relativistic Magnetron

Heyrani Nobari, Ali | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 52956 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Farzaneh, Forouhar; Hashemi, Morad Ali
  7. Abstract:
  8. Magnetron is one of the microwave-generating devices that operates based on the microwave-electron flow interaction in the active region of the tube, which is affected by the resonant cavities and It is used in a wide range of power (from kW range at home microwave ovens to several GW in relativistic high power magnetrons and the frequencies from the order of few too MHz to tens of GHz). Although nowday's low-power generators based on transistors have replaced microwave generating tubes and even MW radio transmitters are made based on the combination of semiconductor microwave generators, but in the production of RF pulses at higher frequencies and powers, the electron tubes are the main competitors. Along with electronic tubes and generators based on transistors, nonlinear transmission lines are also considered as wave generators. Thus, the similarities between their performance can be discerned and the electron tubes can be modeled with nonlinear transmission lines. Although cylindrical modeling of microwave generators is common, it is difficult to present such models because of the complexity of theories describing the interaction of microwave-electron flow interactions. In this project, it is attempted to provide a model based on nonlinear transmission lines for relativistic magnetrons (specifically relativistic magnetron A6 as the model) that can well determine the output of the tube in question
  9. Keywords:
  10. Magnetron ; Nonlinear Transmission Line ; Microwave-Electron Flow Interactions ; Microwave Tubes

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