Design of a Novel Folded Waveguide for 60-GHz Traveling-Wave Tubes

The 60-GHz traveling-wave tube （TWT） prevails nowadays as the amplifier for the satellite communication and electronic countermeasures. The folded waveguide （FW） is a promising all-metal slow-wave structure （SWS） for the 60-GHz TWT with advantages of robust performance, fine heat dissipation, consid...

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Bibliographic Details
Published in:Chinese physics letters 2016-04, Vol.33 (4), p.28-31
Main Author: 廖明亮 魏彦玉 王海龙 徐进 刘漾 郭弓（广黄） 牛新建 宫玉彬 Gun-Sik Park
Format: Article
Language:English
Subjects:
GHz
卫星通信
宽带大功率行波管
折叠
波导
电子对抗
螺旋线行波管
设计
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Summary:The 60-GHz traveling-wave tube （TWT） prevails nowadays as the amplifier for the satellite communication and electronic countermeasures. The folded waveguide （FW） is a promising all-metal slow-wave structure （SWS） for the 60-GHz TWT with advantages of robust performance, fine heat dissipation, considerable power and bandwidth. A novel FW periodically loaded with rectangular grooves is analyzed for the purpose of gaining higher power and gain. The rf characteristics are investigated by numerical simulation, and the nonlinear large- signal performance of such a TWT is analyzed by a 3I） particle-in-cell code MAGIC. Compared with normal circuits, relatively higher continuous-wave power （40-56 W） and similar bandwidth （5 GHz） are predicted by simulation. Meanwhile, the designed operation voltage is 10.5 kV, which keeps the low-voltage advantage of the popular helix TWT competitor. The novel FW will favor the design of a broadband and high-power 60-GHz TWT
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/33/4/044201