Design and development of field emission based rising sun magnetron for industrial applications

ORAL

Abstract

The magnetron is widely used in radars and also well-known as a low-cost microwave source for microwave ovens, which generates microwaves based on the interaction of a stream of moving electrons under a cross electric and magnetic fields with a series of open coupled metal cavity resonators. In this work, a field emission based magnetron is investigated for industrial applications as an easier configuration and longer lifetime can be expected. The design and development are performed using a conformal finite-difference time-domain particle-in-cell simulations. The goal of this research is to design and develop magnetrons operating at a frequency of 2.45 GHz and at a working power of \textgreater 3 kW for industrial applications. A preliminary design after the optimization could achieve the required power at a high efficiency of \textgreater 78{\%}. One of the advantages is the fabrication and assembly can be much simplified compared with those of a conventional strapped magnetron based on a thermionic cathode.

*This work was partially supported by the research fund of Hanyang University (HY-201400000002393), National Research Foundation of South Korea under Grant No. 201500000002559, and MASTEK, Inc. in Taiwan, R. O. C.

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Authors

  • Ling Li

    • Department of Electrical and Biomedical Engineering, Hanyang University, Seoul 04763, South Korea

  • Kaviya Aranganadin

    • Department of Electrical and Biomedical Engineering, Hanyang University, Seoul 04763, South Korea

  • Ming-Chieh Lin

    • Department of Electrical and Biomedical Engineering, Hanyang University, Korea
    • Department of Electrical and Biomedical Engineering, Hanyang University, Seoul 04763, South Korea
    • Department of Electrical and Biomedical Engineering, Hanyang University,

  • Hua-Yi Hsu

    • Department of Mechanical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
    • National Taipei University of Technology, Department of Mechanical Engineering