中国物理B ›› 2019, Vol. 28 ›› Issue (11): 118402-118402.doi: 10.1088/1674-1056/ab4d3d

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Theoretical and experimental study on frequency pushing effect of magnetron

Kang Li(李慷), Yi Zhang(张益), Hua-Cheng Zhu(朱铧丞), Ka-Ma Huang(黄卡玛), Yang Yang(杨阳)   

  1. 1 School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China;
    2 Key Laboratory of Wireless Power Transmission of Ministry of Education, Chengdu 610064, China
  • 收稿日期:2019-07-11 修回日期:2019-09-17 出版日期:2019-11-05 发布日期:2019-11-05
  • 通讯作者: Yang Yang E-mail:yyang@scu.edu.cn
  • 基金资助:
    Project supported by the Sichuan Science and Technology Program, China (Grant No. 2019YFG0419) and the National Natural Science Foundation of China (Grant No. 61601312).

Theoretical and experimental study on frequency pushing effect of magnetron

Kang Li(李慷)1,2, Yi Zhang(张益)1,2, Hua-Cheng Zhu(朱铧丞)1,2, Ka-Ma Huang(黄卡玛)1,2, Yang Yang(杨阳)1,2   

  1. 1 School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China;
    2 Key Laboratory of Wireless Power Transmission of Ministry of Education, Chengdu 610064, China
  • Received:2019-07-11 Revised:2019-09-17 Online:2019-11-05 Published:2019-11-05
  • Contact: Yang Yang E-mail:yyang@scu.edu.cn
  • Supported by:
    Project supported by the Sichuan Science and Technology Program, China (Grant No. 2019YFG0419) and the National Natural Science Foundation of China (Grant No. 61601312).

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摘要： The applications of magnetrons are greatly limited because of the poor output spectrum of the free-running magnetron. Currently, one of the best ways to solve this problem is injection locking. However, the injection locking theory which is widely used nowadays is based on the simplified oscillator, which does not include the frequency pushing effect of the magnetron. In this paper, the theory of injection locking magnetrons with frequency pushing effect is systematically studied. Analytical analysis shows that the locking bandwidth turns larger with the consideration of the pushing parameter (α), and the increase of locking bandwidth is expanded with α increasing. Experimental results show that the locking bandwidth is expanded by 0.3 MHz, 1 MHz, and 1.6 MHz compared with the locking bandwidth from the conventional locking theory under an injection ratio (ρ) of 0.05, 0.075, and 0.1, respectively. This research provides a more accurate prediction of the properties of the injection-locked magnetron.

关键词: magnetron, injection locking, pushing effect

Abstract: The applications of magnetrons are greatly limited because of the poor output spectrum of the free-running magnetron. Currently, one of the best ways to solve this problem is injection locking. However, the injection locking theory which is widely used nowadays is based on the simplified oscillator, which does not include the frequency pushing effect of the magnetron. In this paper, the theory of injection locking magnetrons with frequency pushing effect is systematically studied. Analytical analysis shows that the locking bandwidth turns larger with the consideration of the pushing parameter (α), and the increase of locking bandwidth is expanded with α increasing. Experimental results show that the locking bandwidth is expanded by 0.3 MHz, 1 MHz, and 1.6 MHz compared with the locking bandwidth from the conventional locking theory under an injection ratio (ρ) of 0.05, 0.075, and 0.1, respectively. This research provides a more accurate prediction of the properties of the injection-locked magnetron.

Key words: magnetron, injection locking, pushing effect

中图分类号:  (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))

  • 84.40.Fe
85.40.Qx (Microcircuit quality, noise, performance, and failure analysis) 84.30.Vn (Filters)