| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Analysis of a Novel Ka-band Folded Waveguide Amplifier for Traveling-Wave Tubes |
| LIAO Ming-Liang1, WEI Yan-Yu1, HE Jun1, GONG Yu-Bin1, WANG Wen-Xiang1, Gun-Sik Park2 |
| 1National Key Laboratory of High Power Vacuum Electronics, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 6100542Department of Physics, Seoul National University, Seoul 151-747, Korea |
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| Cite this article: |
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LIAO Ming-Liang, WEI Yan-Yu, HE Jun et al 2009 Chin. Phys. Lett. 26 114207 |
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Abstract A novel Ka-band folded waveguide (FW) amplifier for traveling wave tubes (TWT) is investigated. The dispersion curve and interaction impedance are obtained and compared to the normal FW circuit by numerical simulation. The interaction impedance is higher than a normal circuit through the whole band. We also study the beam-wave interaction in this novel circuit, and the nonlinear large-signal performance is analyzed by a 3-D particle-in-cell code MAGIC3D. A much higher continuous-wave (CW) output power with a considerably shorter circuit compared to a normal circuit is predicted by our simulation. Moreover, the novel FW even has a broader 3-dB bandwidth. It therefore will be useful in designing a miniature but high-power and broadband millimeter-wave TWT.
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| Keywords:
42.60.Da
07.57.Hm
41.20.Jb
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Received: 10 July 2009
Published: 30 October 2009
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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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[1] Fu C F et al 2008 Chin. Phys. Lett. 25 3478
[2] Xie J X et al 2007 Chin. Phys. Lett. 24 1106
[3] Wang W X et al 2003 Int. J. Infrared MillimeterWaves 24 1469
[4] Na Y H, Chung S W and Choi J J 2002 IEEE Trans.Plasma Science 30 1017
[5] Han S T et al 2004 IEEE Trans. Plasma Science 32 60
[6] Booske J H et al 2005 IEEE Trans. Electron. Devices 52 685
[7] Bhattacharjee S et al 2004 IEEE Trans. PlasmaScience 32 1002
[8] Han S T 2004 PhD dissertation (Seoul NationalUniversity)
[9] Ludeking L, Smithe D, Bettenhausen M and Hayes S 1999 Magic User's Manual (Virginia: ATK Mission Research Corporation) |
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