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首页> 外文期刊>Physical Review. Accelerators and Beams >High power microwave switch employing electron beam triggering with application to active rf pulse compressors
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High power microwave switch employing electron beam triggering with application to active rf pulse compressors

机译：采用电子束触发的高功率微波开关，应用于有源射频脉冲压缩机

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摘要

Switch for modulation of the $Q$ factor of a multimode rf energy storage resonator is described. The rf energy is stored in a cylindrical resonator in the ${mathrm{TE}}_{02}$ mode, and switched out from it in the ${mathrm{TE}}_{01}$ mode. The operating principle of the switch is based on effecting a fast increase in the ${mathrm{TE}}_{02}ensuremath{ightarrow}{mathrm{TE}}_{01}$ mode coupling coefficient when an electron beam is injected into the switch cavity. This paper focuses on use of the switch in an active rf pulse compressor. Use of the electron beam allows one to separate the switching element from the compressor itself, and therefore to eliminate limitations to the level of switched power that exists for other switches. The pulse compressor was tested at low power at a frequency of 11.424 GHz. The level of peak power gain achieved in these experiments was 19--21, with compressed pulse widths of 30--40 ns. Good stability and repeatability of the shape of compressed pulses was observed. High power versions of this switch appear promising for use in active GW-level microwave compressors.
机译：描述了用于调制多模射频储能谐振器的$ Q $因数的开关。射频能量在$ { mathrm {TE}} _ {02} $模式下存储在圆柱谐振器中，并在$ { mathrm {TE}} _ {01} $模式下从中断开。开关的工作原理是基于当$ { mathrm {TE}} _ {02} ensuremath { rightarrow} { mathrm {TE}} _ {01} $模式耦合系数快速增加的基础上实现的。电子束被注入开关腔。本文重点介绍了该开关在有源射频脉冲压缩器中的使用。电子束的使用允许将开关元件与压缩机本身分开，从而消除了对其他开关存在的开关功率水平的限制。脉冲压缩机在11.424 GHz的低功率​​下进行了测试。这些实验中获得的峰值功率增益水平为19--21，压缩脉冲宽度为30--40 ns。观察到压缩脉冲形状的良好稳定性和可重复性。该开关的高功率版本似乎有望用于有源GW级微波压缩机。

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