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Effect of Cathode Voltage Waveform on the Output Power of Magnetrons

Zarghani, Mostafa | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46937 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Kaboli, Shahriyar
  7. Abstract:
  8. In industial applications such as linear accelerators, pulsed lasers, nuclear fusion, radar systems, medical applications and etc. that need great ratio of instantanuse to the average power, pulsed power supplies are used. These power supplies store energy in an energy storage element and discharge this energy to load in a short period of time. The most important characterisitics of them are output pulse quality, reliability and longevity of the resource, efficiency and cost. One of the devices that produce high instantaneous RF power is magnetron tube. In some applications such as radar systems, quality of the output RF is very important and the most important factor that affect the quality of their output power is the quality of current and voltage pulse. In this project, the effect of voltage and current waveforms of the cathode of magnetron on quality of its output RF power is investigated. The effects of parasitic elements of pulsar on the magnetron voltage and current waveforms have been studied. Based on these results, a proper structure is selected and implemented using a series of switches. A method for balancing the voltage on the switches is presented. Experimental and simulation results are presented to coantify the quality of the proposed method
  9. Keywords:
  10. Pulse Generator ; Magnetron ; Cathode Voltage Wave Form

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