Demonstration of a High-Power and Wide-Bandwidth G-Band Traveling Wave Tube With Cascade Amplification

Demonstration of a High-Power and Wide-Bandwidth G-Band Traveling Wave Tube With Cascade Amplification
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带级联放大的高功率、宽带宽 G 波段行波管演示

DOI:
10.1109/led.2021.3057106
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发表时间:
2021-04
影响因子:
4.9
通讯作者:
Zhenxia Zhang
Zhenxia Zhang
中科院分区:
工程技术2区
文献类型:
--
作者:
Wenxin Liu;Zhiqiang Zhang;Weihao Liu;Zhihao Jin;Kedong Zhao;Chao Zhao;Xin Guo;Zhaochuan Zhang;Shengyi Yin;Zhenxia Zhang

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提出并实验验证了一种高功率、宽带宽的太赫兹行波管(TWT),它具有两个级联放大段:第一个TWT的输出波用作第二个TWT的输入。使用17 kV,71 mA电子束,在0.22 THz附近,在占空比为20%时,测得峰值功率超过60 W,平均输出功率超过12 W。增益约为30 dB,带宽超过6 GHz。在设计的频谱范围内,平均功率-带宽-增益乘积达到了历史最高值。我们可以预见,这种新开发的太赫兹行波管将有广阔的应用前景,如在远程雷达和通信系统。
We propose and experimentally demonstrate a high-power and wide-bandwidth terahertz travelling wave tube (TWT), which is with two cascade amplification sections: the output wave of the first TWT is used as the input of the second one. Using a 17 kV, 71 mA electron beam, the measured peak power is over 60 watt and the average output power is over 12 watts with 20% duty cycle at the frequency around 0.22 THz. The gain is about 30 dB and the bandwidth is over 6 GHz. The average power-bandwidth-gain product reaches record high in the designed spectral range. We envisage that this new developed terahertz TWT will have broad application prospects, such as in long-range radar and communication systems.
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