Analysis and experiments of self-injection magnetron

Magnetrons are widely used in microwave-based industrial applications, which are rapidly developing. However, the coupling between their output frequency and power as well as their wideband spectra restricts their further application. In this work, the output frequency and power of a magnetron are d...

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Bibliographic Details
Published in:Chinese physics B 2016-04, Vol.25 (4), p.436-443
Main Author: 张益 叶文军 袁萍 朱铧丞 杨阳 黄卡玛
Format: Article
Language:English
Subjects:
Circuits
Coupling
Equivalence
Frequency variation
Mathematical models
Noise
Spectra
Wideband
光谱带宽
实验
工业应用
微波磁控管
注入式
相位噪声
磁控反应
输出频率
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Summary:Magnetrons are widely used in microwave-based industrial applications, which are rapidly developing. However, the coupling between their output frequency and power as well as their wideband spectra restricts their further application. In this work, the output frequency and power of a magnetron are decoupled by self-injection. Moreover, the spectral bandwidth is narrowed, and the phase noise is reduced for most loop phase values. In order to predict the frequency variation with loop phase and injection ratio, a theoretical model based on a circuit equivalent to the magnetron is developed. Furthermore, the developed model also shows that the self-injection magnetron is stabler than the free-running magnetron and that the magnetron＇s phase noise can be reduced significantly for most loop phase values. Experimental results confirm the conclusions obtained using the proposed model.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/25/4/048402