Efficiency enhancement of high power microwave generation from a cylindrical virtual cathode oscillator with ring-type reflector

Digest of Technical Papers. PPC-2003. 14th IEEE International Pulsed Power Conference (IEEE Cat. No.03CH37472) Pub Date : 2003-06-15 DOI:10.1109/PPC.2003.1277750

E. Choi, K. Y. Sung, W. Jeon, H. Uhm

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引用次数: 5

Abstract

We have investigated an efficiency enhancement of high power microwave generation from cylindrical virtual cathode oscillator by adopting a ring type reflector in this experiment. This high power microwave generator is powered by the "Chundoong" intense relativistic electron beam pulser (Max : 600 kV, 88 kA and 60 ns duration). It is noted in this experiment that the maximum power can be obtained at the cylindrical A-K gap distance of 8 mm with ring-type reflector width 7mm. The microwave frequency has been measured to be 4.8/spl sim/5.1 GHz by combination of coupled line band pass filters with band gap of 1 GHz and dispersive delay line. It is noted that the output microwave power and its microwave conversion efficiency without reflector are about 244 MW and 2.7 %, respectively, at A-K gap distance 4mm in this experiment. It is especially found in this experiment that the maximum microwave output power and efficiency with optimized ring-type reflector could be enhanced up to 426 MW and 7.1 %, respectively.

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带环形反射器的圆柱形虚阴极振荡器产生高功率微波的效率提高

在实验中，我们研究了采用环形反射器提高圆柱形虚阴极振荡器产生高功率微波的效率。该高功率微波发生器由“春洞”强相对论电子束脉冲发生器(最大:600 kV, 88 kA, 60 ns持续时间)提供动力。在本实验中，环形反射镜宽度为7mm时，在圆柱A-K间隙距离为8mm处可获得最大功率。采用带隙1 GHz的耦合线带通滤波器和色散延迟线组合，测得微波频率为4.8/spl sim/5.1 GHz。实验结果表明，当A-K间隙距离为4mm时，无反射器的输出微波功率约为244 MW，微波转换效率约为2.7%。实验结果表明，优化后的环形反射器最大微波输出功率和效率分别提高了426 MW和7.1%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Digest of Technical Papers. PPC-2003. 14th IEEE International Pulsed Power Conference (IEEE Cat. No.03CH37472)

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