Research on coaxial transit time oscillator with low magnetic field and high efficiency

Autor: Peng Zhang, Fangchao Dang, Xingjun Ge, Rujin Deng, Lei Wang, Ting Shu, Juntao He
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: AIP Advances, Vol 12, Iss 7, Pp 075017-075017-8 (2022)
Druh dokumentu: article
ISSN: 2158-3226
DOI: 10.1063/5.0088958
Popis: An improved X-band coaxial transit time oscillator is proposed in this paper. First, the device uses a non-uniform three-gap modulation cavity to improve the clustering of electron beams under a low magnetic field and to increase the depth of the fundamental current modulation. The operating mode of the modulation cavity is the 2π/3 mode of TM01. Second, the dual-cavity extraction structure works in π mode, which can continuously and intensively extract the electron beam energy. The physical characteristics of the device are studied through simulation and experiment. The experimental results indicate that the high power microwave with a frequency of 8.38 GHz and a power of 1.78 GW is generated when the diode voltage is 520 kV and the guiding magnetic field is 0.65 T, yielding a pulse width of 27 ns and an efficiency of 32%.
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