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首页> 外文期刊>Electron Devices, IEEE Transactions on >Investigation of an${X}$-Band Long Pulse High-Power High-Gain Coaxial Multibeam Relativistic Klystron Amplifier
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Investigation of an${X}$-Band Long Pulse High-Power High-Gain Coaxial Multibeam Relativistic Klystron Amplifier

机译： $ {X} $ -波段长脉冲高功率高增益同轴多光束相对论的研究速调管放大器

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摘要

Increasing the output power of the microwave is one of the most important development directions for high-power microwave (HPM) technology. However, when the output power is increased, the radio frequency breakdown would occur owing to superhigh electric field strength. This problem limits the power handling capability of a single-HPM generator, and this problem becomes more serious for high-frequency bands and long pulse. One solution to overcome this problem is coherent power combining, and coherent power combining can achieve an equivalent power of the order of mymargin TW. The relativistic klystron amplifier (RKA) is a promising candidate for coherent power combing owing to its character of controllable frequency and steady phase. However, the radiation power of RKA quickly decreases when the source is scaled up to higher frequencies such as${X}$-band, and moreover, the multigigawatts long pulse radiation from RKA at the${X}$-band has not yet been obtained experimentally. In this paper, we present investigations into an${X}$-band coaxial multibeam RKA, The power handling capability was increased by introducing 20 electron drift tubes and a four gaps extended interaction output cavity. The amplitude uniformity of the multiple electron beams was improved by optimized the anode and cathode configuration. Then, a radiation power of 2.2 GW with pulsewidth of 120 ns is generated experimentally; the working frequency and amplifier gain are 9.4GHz and 50 dB, respectively.
机译：增大微波的输出功率是高功率微波（HPM）技术最重要的发展方向之一。但是，当输出功率增加时，由于超高电场强度会发生射频击穿。这个问题限制了单HPM发生器的功率处理能力，并且该问题对于高频带和长脉冲变得更加严重。克服此问题的一种解决方案是相干功率组合，并且相干功率组合可以实现mymargin TW量级的等效功率。相对论速调管放大器（RKA）具有可控频率和稳定相位的特性，因此是相干功率梳理的有希望的候选者。但是，当源放大到更高的频率时，例如 n $ {X} $ n波段，此外，来自RKA的几千兆瓦长脉冲辐射位于 n $ {X} $ n-波段尚未通过实验获得。在本文中，我们对 n $ {X} $ n波段同轴多波束RKA，功率处理通过引入20个电子漂移管和四个间隙扩展的相互作用输出腔，可以提高能力。通过优化阳极和阴极结构，可以改善多束电子束的振幅均匀性。然后，实验产生了2.2 GW的辐射功率和120 ns的脉冲宽度；工作频率和放大器增益分别为9.4GHz和50 dB。

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  • 来源
    《Electron Devices, IEEE Transactions on》 |2019年第1期|722-728|共7页
  • 作者

    Zhenbang Liu; Hua Huang; Xiao Jin; Shifeng Li; Tengfang Wang; Xianghe Fang;

  • 作者单位

    Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, China Academyof Engineering Physics, Mianyang, China;

    Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, China Academyof Engineering Physics, Mianyang, China;

    Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, China Academyof Engineering Physics, Mianyang, China;

    Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, China Academyof Engineering Physics, Mianyang, China;

    Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, China Academyof Engineering Physics, Mianyang, China;

    Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, China Academyof Engineering Physics, Mianyang, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cavity resonators; Electron beams; Electron tubes; Microwave oscillators; Electric breakdown; Microwave devices; Voltage measurement;

    机译：腔谐振器;电子束;电子管;微波振荡器;电击穿;微波设备;电压测量;

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