A new coaxial high power microwave source based on dual beams

Li, Yangmei; Zhang, Xiaoping; Qi, Zumin; Dang, Fangchao; Qian, Baoliang

doi:10.1063/1.4881465

Title: A new coaxial high power microwave source based on dual beams

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Abstract

We present a new coaxial high power microwave source based on dual beams, which combines a relativistic backward wave oscillator (RBWO) (noted as the inner sub-source below) and a coaxial transit-time oscillator (TTO) (noted as the outer sub-source). The cathode consists of an inner and an outer annular cathode, which provides the inner and the outer annular electron beam for the sub-sources, respectively. Particle-in-cell (PIC) simulation results demonstrate that power conversion efficiencies of the two sub-sources with an identical frequency of 9.74 GHz are 29% and 25%, respectively. It is furthermore found that phase locking between the inner and the outer sub-sources can be realized, which suggests a feasibility to obtain a higher power output if the two microwave signals are coherently combined.

Authors:

Li, Yangmei; Zhang, Xiaoping; Qi, Zumin; Dang, Fangchao; Qian, Baoliang ^[1]

College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073 (China)

Publication Date:: Thu May 15 00:00:00 EDT 2014

OSTI Identifier:: 22300130

Resource Type:: Journal Article

Journal Name:: Physics of Plasmas

Additional Journal Information:: Journal Volume: 21; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CATHODES; ELECTRON BEAMS; GHZ RANGE 01-100; MICROWAVE RADIATION; OSCILLATORS; RELATIVISTIC RANGE; SIGNALS; SIMULATION

Citation Formats


                    Li, Yangmei, Zhang, Xiaoping, Qi, Zumin, Dang, Fangchao, and Qian, Baoliang. A new coaxial high power microwave source based on dual beams.  United States: N. p., 2014. 
        Web.  doi:10.1063/1.4881465.

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                    Li, Yangmei, Zhang, Xiaoping, Qi, Zumin, Dang, Fangchao, & Qian, Baoliang. A new coaxial high power microwave source based on dual beams.  United States.  https://doi.org/10.1063/1.4881465

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                    Li, Yangmei, Zhang, Xiaoping, Qi, Zumin, Dang, Fangchao, and Qian, Baoliang. 2014.  
        "A new coaxial high power microwave source based on dual beams".  United States.  https://doi.org/10.1063/1.4881465.

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@article{osti_22300130,

  title        = {A new coaxial high power microwave source based on dual beams},

  author       = {Li, Yangmei and Zhang, Xiaoping and Qi, Zumin and Dang, Fangchao and Qian, Baoliang},

  abstractNote = {We present a new coaxial high power microwave source based on dual beams, which combines a relativistic backward wave oscillator (RBWO) (noted as the inner sub-source below) and a coaxial transit-time oscillator (TTO) (noted as the outer sub-source). The cathode consists of an inner and an outer annular cathode, which provides the inner and the outer annular electron beam for the sub-sources, respectively. Particle-in-cell (PIC) simulation results demonstrate that power conversion efficiencies of the two sub-sources with an identical frequency of 9.74 GHz are 29% and 25%, respectively. It is furthermore found that phase locking between the inner and the outer sub-sources can be realized, which suggests a feasibility to obtain a higher power output if the two microwave signals are coherently combined.},

  doi          = {10.1063/1.4881465},

  url          = {https://www.osti.gov/biblio/22300130},
  journal      = {Physics of Plasmas},

  issn         = {1070-664X},

  number       = 5,

  volume       = 21,

  place        = {United States},

  year         = {Thu May 15 00:00:00 EDT 2014},

  month        = {Thu May 15 00:00:00 EDT 2014}

}

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