High-Power 100 kW CW Q-Band Gyro-TWT: Performance and Stability

被引：1

作者：

Jiang, Wei ^{[1
]}

Lu, Chaoxuan ^{[1
]}

Zhou, Jianwei ^{[1
]}

Shang, Yafen ^{[1
]}

Zheng, Qiang ^{[1
]}

Dai, Boxin ^{[1
]}

Liu, Guo ^{[1
]}

Wang, Jianxun ^{[1
]}

Yao, Yelei ^{[1
]}

Luo, Yong ^{[1
,2
]}

机构：

[1] Univ Elect & Sci Technol China, Sch Elect Sci & Engn, Chengdu 611731, Peoples R China

[2] Lab Electromagnet Space Cognit & Intelligent Contr, Beijing 100089, Peoples R China

来源：

IEEE ELECTRON DEVICE LETTERS | 2025年 / 46卷 / 05期

关键词：

Thermal stability; Cathodes; Electron emission; Gain; Attenuation; Thermal management; Structural beams; Power generation; Microwave devices; Performance evaluation; High-power microwave; gyro-TWT; electron emission; power capacity; CW power; Q-band; WAVE;

D O I：

10.1109/LED.2025.3553624

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

To satisfy the demand for high-power microwave sources, a Q-band 100 kW continuous-wave (CW) gyrotron traveling wave tube (gyro-TWT) is fabricated and experimentally demonstrated in this letter. The stability and uniformity of electron emission are greatly improved through the application of cathode coating thin-film technology. The power capacity of the device is assessed using efficient thermal management methods. Experimental results show that the gyro-TWT, driven by a 56 kV-7.9 A electron beam, achieves a maximum CW power of 115.6 kW, a gain of 54.9 dB, and an efficiency of 26.1% at 49.5 GHz. The device operates stably for a long time, with performance at the forefront of current technology.

引用

页码：860 / 863

页数：4

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