Nonlinear full-wave-interaction analysis of a gyrotron-traveling-wave-tube amplifier based on a lossy dielectric-lined circuit

Nonlinear full-wave-interaction analysis of a gyrotron-traveling-wave-tube amplifier based on a lossy dielectric-lined circuit
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基于有损介质衬里电路的回旋管行波管放大器的非线性全波相互作用分析

DOI:
10.1063/1.3339935
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发表时间:
2010-03
期刊:
影响因子:
2.2
通讯作者:
--
中科院分区:
物理与天体物理3区
文献类型:
--
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利用有耗介质波导控制回旋行波管放大器工作模式的传播特性,可以有效地提高回旋行波管放大器的稳定性。基于对有耗DL波导传输特性的全波研究,建立了有耗DL电路中电子回旋脉塞(ECM)互作用的自洽非线性理论。这种非线性理论充分考虑了波导结构和有耗介质特性。该方法能够准确计算回旋谐波和圆极化模式之间的ECM不稳定性,并有效地预测DL波导回旋行波管的非线性稳定性。本文对Ka波段TE_(01)模DL波导回旋行波管进行了系统的研究,数值计算得到了一系列有趣的结果。为进一步探索有耗DL波导的应用提供了基本的理论工具。
The stability of the millimeter-wave gyrotron-traveling-wave-tube (gyro-TWT) amplifier can be effectively improved via controlling the propagation characteristics of the operating modes using lossy dielectric-lined (DL) waveguide. Self-consistent nonlinear theory of the electron cyclotron maser (ECM) interaction in lossy DL circuit is developed based on a full-wave study of the propagation characteristics of the DL waveguide. This nonlinear theory fully takes into consideration the waveguide structure and the lossy dielectric characteristics. It is capable of accurately calculating the ECM instability between a cyclotron harmonic and a circular polarized mode, and effectively predicting the nonlinear stability of the DL waveguide-based gyro-TWT. Systematic investigation of a Ka-band TE01 mode DL waveguide-based gyro-TWT is carried out, and numerical calculation reveals a series of interesting results. This work provides a basic theoretical tool for further exploring the application of the lossy DL wavegui...
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