| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Linear Analysis of Folded Double-Ridged Waveguide |
| HE Jun, WEI Yan-Yu, GONG Yu-Bin, WANG Wen-Xiang |
| Vacuum Electronics~National~Laboratory, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054 |
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| Cite this article: |
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HE Jun, WEI Yan-Yu, GONG Yu-Bin et al 2009 Chin. Phys. Lett. 26 114103 |
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Abstract A novel slow-wave structure (SWS), the folded double-ridged waveguide structure, is presented and its linear gain properties are investigated. The perturbed dispersion equation is derived and the small signal growth rate is calculated for dimensions of the ridge-loaded region and the parameters of the electron beam. The novel structure has potential applications in the production of high power and broad band radiation. For a cold beam, the linear theory predicts a gain of 1.1-1.27dB/period and a 3-dB small-signal gain bandwidth of 30% in W-band. A comparison between the folded double-ridged waveguide SWS and folded waveguide SWS (FWSWS) shows that with the same physical parameters, the novel SWS has an advantage over the FWSWS on the bandwidth and electron efficiency.
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| Keywords:
41.60.Cr
41.20.Jb
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Received: 22 June 2009
Published: 30 October 2009
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| PACS: |
41.60.Cr
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(Free-electron lasers)
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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[1] Button K J 1979 Infrared and Millimeter Waves (NewYork: Academic) p 95
[2] Fu C F et al 2008 Chin. Phys. Lett. 25 3478
[3] Xu J et al 2006 Chin. Phys. Lett. 23 243
[4] Choi J J et al 1996 Phys. Rev. Lett. 76 4273
[5] Lyon D B and Theiss A J 1994 Proc. IEDM p 198
[6] Wei Y Y, Wang W X et al 2002 Chin. Phys. 11277
[7] Sadwick L, Hwu R J, Scheitrum G 2003 Proc. Int. Conf.Vac. Electronics p 360
[8] Wei Y Y et al 2000 Acta Phys. Sin. 49 949 (inChinese)
[9] Hopfer S 1955 IRE Trans. Microwave Theory andTechnol. vol MTT-3 p 20
[10] Cohen S B 1947 Proc. IRE 35 783
[11] Collin R E 1960 Field Theory of Guided Waves (NewYork McGraw Hill) 338--346
[12] Getsinger W J 1962 IRE Trans. Microwave Theory andTechnol. 10 41
[13] Tsimring S E 2006 Electron Beams and MicrowaveVacuum Electronics (New Jersey: John Wiley {\& Sons) p 277
[14] Neil V K and Heckrotte W 1963 J. Appl. Phys. 36 2761
[15] Lau Y Y 1982 IEEE Trans. Electron Devices 29320 |
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