(18.210.12.229) 您好!臺灣時間:2021/02/26 09:24
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果

詳目顯示:::

我願授權國圖
: 
twitterline
研究生:吳松金
研究生(外文):Wu Sueng-Chien
論文名稱:TE01模式磁旋行波放大器之穩定性分析
論文名稱(外文):Stability Analysis of TE01 Gyrotron Traveling Wave Amplifier
指導教授:葉義生葉義生引用關係
指導教授(外文):Yeh Yi-Sheng
學位類別:碩士
校院名稱:南台科技大學
系所名稱:電機工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:71
中文關鍵詞:磁旋行波放大器模式競爭隔離管散佈式損耗
外文關鍵詞:gyro-TWTmode competitionsever tubedistributed wall loss
相關次數:
  • 被引用被引用:0
  • 點閱點閱:62
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:9
  • 收藏至我的研究室書目清單書目收藏:0
磁旋行波放大器是藉由電子迴旋的都卜勒頻移而使電子束能量轉換成電磁波的毫米波放大器,而由於TE01模式磁旋行波放大器具有低歐姆損耗及高迴旋中心半徑兩種特性,有利於產生高功率毫米波,然而受限於磁旋行波放大器可能引發自發振盪及反射振盪,造成模式競爭而抑制原先操作模式的放大波,進而影響其輸出功率、增益及效率。模擬結果顯示,TE02、TE01模式絕對不穩定的引發使得原有操作電流降低,其起振電流明顯受電子速率比、作用段長度的影響,但此模式可藉由損耗來抑制,此結論與線性理論結果一致。然而另一種TM01模式自發性振盪,其起振電流不僅受電子速率比、作用段長度的影響,且不易藉由損耗來抑制。本研究也針對Ka頻段磁旋行波放大器(NRL)、Ka頻段具有隔離管磁旋行波放大器(UCLA)和W頻段具散佈式損耗磁旋行波放大器(UCD),藉由電漿模擬程式(MAGIC CODE)進行分析,結果顯示Ka頻段磁旋行波放大器(NRL)其輸入功率需達10KW才能達成放大效果。Ka頻段具有隔離管磁旋行波放大器(UCLA)與W頻段具散佈式損耗磁旋行波放大器(UCD)的模擬結果顯示,由於TE02、TE01和TM01模式振盪而造成輸出功率明顯下降。

The gyrotron traveling wave amplifier (gyro-TWT) is a high-power, broadband, millimeter-wave amplifier. The mode exhibits the lowest ohmic dissipation in previous gyro-TWT experiment. Moreover, it’s field peaks at a radial position of half the waveguide radius, so the quality of electron beam isn’t degraded. Therefore, the TE01 mode gyro-TWT may be a high-power millimeter-wave amplifier. However, the output power, gain, and efficiency of gyro-TWT will be degraded where the spontaneous and reflective oscillations occur. Start-oscillation current will be down by absolute instability of TE02 and TE01 modes and electron velocity ratio and interaction section, it can be suppressed by the distributed wall losses. However, the spontaneous oscillation(TM01 mode) is not effectively suppressed by the distributed wall losses. The Ka band gyro-TWT(NRL) will be amplified, where the input power is 10KW. The output power is decreased because of competition from the TE02、TE01 and TM01 oscillations in the Ka band gyro-TWT(UCLA) with sever and the W band gyro-TWT(UCD) with distributed wall losses.

中文摘要…………………………………………………………..…….…v
英文摘要……………………………………………………………….….vi
致謝…………………………………………………………………….…vii
目錄………………………………………………………………………viii
圖目錄………………………………………………………………………x
第一章 緒論………………………………………………………………1
第二章 研究方法……………………………………………………….12
2.1 線性理論……………………………………………………………12
2.2 非線性理論…………………………………………………………17
2.3 電漿模擬程式…………………………..…………………………17
2.4 MAGIC程式適用性評估…………………………………………..20
第三章 絕對不穩定性………………………………………………….24
3.1 基本原理…………………………………………………………24
3.2 無損耗結構………………………………………………………29
3.3 具損耗結構………………………………………………………35
第四章 磁旋返波振盪……………………………………………….45
4.1 基本原理……………………….0……………………………….45
4.2 起振長度分析……………………………………………………46
第五章 TM01模式的自發性振盪……………………………………48
第六章 TE01模式磁旋行波放大器…………………………………55
6.1 Ka頻段磁旋行波放大器(NRL)…………………………55
6.2 Ka頻段具隔離管磁旋行波放大器(UCLA)…………….60
6.3 W頻段具散佈式損耗磁旋行波放大器(UCD)…………60
結論………………………………………………………………….67
參考文獻…………………………………………………………….68

[1] 王錦雄, “磁旋行波放大器實驗結果的理論印證’’, 國立清華大學物理研究所碩士論文,(1995)2。
[2] 龍嘉雲,“磁旋行波管的非線性分析’’,國立清華大學物理研究所碩士論文,(1992)3。
[3] Victor L. Granatstein and Igor Alexeff, High-Power MicroWave Sources. p.112 Artech House Boston.Londan.
[4] T. A. Spencer, C. E. Drvis, K. J. Hendricks, F. J. Agee and R.M.Gilgenback, “Results from gyrotron backward wave oscillator experiments utilizing a high-current high-voltage annular electron beam,” IEEE Trans. Plasma Sci, vol. 24, pp. 630-635, 1996.
[5] S. Y. Park, V. L. Granatstein,and R. K. Parker, “A Linear theory and design study for a gyrotron backward-wave oscillator,” Int .J. Electronics, vol.57, 1109-1123, 1984.
[6] A. T. Lin, “Mechanism of efficiency enhancement in gyrotron backward-Wave oscillator via a tapered axial magnetic field,” Appl. phys. Lett., vol. 54, pp.514-516, 1989.
[7] L. R. Barnett, J. M. Baird, Y. Y. Lau, K. R. Chu and V. L. Granastein, “A High Gain Single Stage Gyrotron Traveling wave Amplifier,” IEDM Technical Digest pp.314-317, 1980.
[8] 張存續,“磁旋返波震盪機制之理論與實驗研究’’ ,國立清華大學物理研究所碩士論文,(1999)3。
[9] J. L. Seftor, V. L. Granatstein, K. R. Chu, P. Sprangle, and M. E. Real, “The electron cyclotron maser as a high power traveling-wave amplifier of millimeter waves,” IEEE J. Quantum Electron., vol. 15, pp. 848-853, 1979.
[10] L. R. Barnett, K. R. Chu, J. Mark Baird, V. L. Granatstein, A. T. Drobot “Gain,Saturation, and bandwidth measurementing of the NRL Gyrotron traveling wave amplifier,” IEEE. pp.194-167, 1979.
[11] R. S. symons, H. R. Jory, S. J. Hegji and P. E. Ferguson, “An Experimeufal Gyro-TWT,” IEEE Trans. MTT. vol.29, no.3, pp.181-184,1981.
[12] P. E. Ferguson, G. Valier and R. S. Symons, “Gyrotron-TWT Operating Characteristics,” IEEE Trans. MTT. vol.29, no.8, pp.794-799,1981.
[13] L. R. Barnett, L. H. Chang, H. Y. Chen, K. R. Chu, Y. K. Lau, and C. C. Tu, “Absolute instability compentition and suppression in a millimeter-wave gyrotron traveling-wave tube,” Phys. Rev. Lett., vol. 63, pp. 1062-1065, 1989.
[14] A. K. Ganguly and S. Ahn. “Self-consistent large signal theory of the gyrotron traveling-wave amplifier, “ Int. J. Electron., vol. 53, no. 6, pp. 641-658. 1982.
[15] Q. S. Wang, C. S. Kou. D. B. McDermott, A. T. Lin, K. R. Chu, and N. C. Luhmann, Jr., “High-power harmonic gyro-TWT-part Ⅱ: nonlinear theory and design.” IEEE Trans. Microwave Theory Tech. vol. 20, no. 3, pp. 163-169. 1992.
[16] Q. S. Wang, D. B. McDermott, C. S. Kou, N. C. Luhmann, Jr., and J. Pretterebner, “35 GHz high-power second harmonic gyro-TWT amplifier.” in IEEE Int. Electron Devices Meet. TEch. Digest, pp. 207-210. 1992.
[17] Q. S. Wang, D. B. McDermott, and N. C. Luhmann, Jr. “Demonstration of marginal stability theory by a 200-kW second-harmonic gyro-TWT amplifier.” Phys. Rev. Lett., vol. 75, pp. 4322-4325, 1995.
[18] K. C. Leou, D. B. McDermott, A. J. Balkcum, and N. C. Luhmann. Ir. “Stable high power TE01 gyro-TWT amplifier,” IEEE Trans. Plasma Sci., vol.22, pp.585-592, 1994
[19] K. R. Chu, L. R. Barnet, H. Y. Chen, Ch. Wang, Y. S. Yeh, Y. C. Tsai, T. T. Yang, and T. Y. Dawn, “stabilizing of absolute instabilities in gyrotron traveling-Wave amplifier,” Phys. Rev. Lett., vol. 74, pp.1103-1106, 1995.
[20] K. R. Chu, H. Y. Chen, C. L. Hung, T. H. Chang, L. R. Barnett, S. H. Chen, T. T. Yang, and D. J. Dialetis, “Theory and experiment of ultrahigh-gain gyrotron traveling wave amplifier,” IEEE Trans. Microwave Theory Tech., vol. 27, no. 2, pp. 391-404, 1999.
[21] K. R. Chu, H. Y. Chen, C. L. Hung, T. H. Charg, L. R. Barnett, S. H. Chen, and T. T. Yang, “ultra high gain gyrotron traveling wave amplifier,” Phy. Rev. Lett., vol.81, pp.4760-4763, 1998.
[22] Ch. Wang, Y. S. Yeh, T. T. Yang, H. Y. Chen, S. H. Chen, Y. C. Tsai, L. R. Barnett, and K. R. Chu, “A mechanically tunable magnetron Injection gun,” Rev. Sci. Instrum., vol. 68, pp. 3031-3035, 1997.
[23] Y. S. Yeh, M.H. Tsao, H.Y. Chen, and T.H. Chang, "Improved computer program for magnetron injection gun design", Int. J. Infraded and Millimeter Waves, vol. 21, no.9, pp.1397-1415, 2000.
[24] V. L. Granatstein, and I. Alexeff, High-power Microwave Source, ARTECH HOUSE, 1985.
[25] R. E. Collin, Foundations for Microwave Engineering, McGRAW-Hill Book Company, 1966.
[26] K. R. Chu and A. T. Lin, “Gain and Bandwidth of the Gyrotron-TWT and CARM Amplifiers,” IEEE Trans. plasma Sci., vol.16, no.2, pp.90-104, 1988.
[27] C. K. Birdsall, and A. B. Langon, Plasma Physics Via Computer Simulation, 1985.
[28] B. Goplen, L. Ludeking, and D. smithe, “MAGIC 3D user’s manual,” Mission Research Corporation, 1997.
[29] C. S. Kou, Q. S. Wang, D. B. McDermott, A. T. Lin, K. R. Chu, and N. C. Luhmann, Jr., “High-power harmonic gyro-TWT-Part 1:linear theory and oscillation study,” IEEE Trans. Plasma Sci., vol.20, no.3, pp.155-162, 1992.
[30] Y. Hirata, D. B. McDermott, A. T. Lin, T. H. Chang, K. R. Chi, and N. C. Luhmann, Jr. “W-Band TE01Gyro-TWT with Heavy Wall Loss,” IEEE Conf. pp.179-180, 2000.

連結至畢業學校之論文網頁點我開啟連結
註: 此連結為研究生畢業學校所提供,不一定有電子全文可供下載,若連結有誤,請點選上方之〝勘誤回報〞功能,我們會盡快修正,謝謝!
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
系統版面圖檔 系統版面圖檔