A 237 GHz Traveling Wave Tube for Cloud Radar

被引：0
|
作者：
Li, Ying [1 ]
Pan, Pan [1 ]
Song, Bowen [1 ]
Zhang, Lin [1 ]
Feng, Jinjun [1 ]
机构：
[1] Beijing Vacuum Elect Res Inst, Natl Key Lab Sci & Technol Vacuum Elect, Beijing 100015, Peoples R China
来源：
ELECTRONICS | 2023年 / 12卷 / 10期
基金：
中国国家自然科学基金;
关键词：
vacuum electronic amplifier; traveling wave tube; folded waveguide; HIGH-POWER;
D O I：
10.3390/electronics12102153
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this article, the first 237 GHz traveling wave tube (TWT) is presented as a high-power amplifier for the terahertz (THz) cloud radar. As is common with previous G-band traveling wave tubes developed at Beijing Vacuum Electronics Research Institute, the 237 GHz traveling wave tube employs a 20 kV, 50 mA pencil electron beam focused using periodic permanent magnets (PPMs) to achieve compactness. A folded waveguide (FWG) slow-wave structure (SWS) with modified circular bends is optimized to provide high impedance and eliminate sideband oscillations. Limited by insufficient drive power, this device is not saturated. The measured maximum output power and gain are 8.9 W and 35.7 dB, and the 3 dB gain bandwidth achieves 4 GHz.
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页数：10
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