| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Design of a Novel Folded Waveguide for 60-GHz Traveling-Wave Tubes |
| Ming-Liang Liao1,2, Yan-Yu Wei1**, Hai-Long Wang1,2, Jin Xu1, Yang Liu1,2, Guo Guo1, Xin-Jian Niu1, Yu-Bin Gong1, Gun-Sik Park3 |
1National Key Laboratory of High Power Vacuum Electronics, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054
2Southwest China Research Institute of Electronic Equipment (CETC 29), Chengdu 610036
3Center for THz-Bio Application Systems, Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea
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| Cite this article: |
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Ming-Liang Liao, Yan-Yu Wei, Hai-Long Wang et al 2016 Chin. Phys. Lett. 33 044201 |
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Abstract 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 3D 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.
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Received: 25 November 2015
Published: 29 April 2016
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| PACS: |
42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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07.57.Hm
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(Infrared, submillimeter wave, microwave, and radiowave sources)
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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