volume | PIER Journals

Abstract

The design and analysis of a high-power wideband sheet-beam coupled-cavity traveling-wave tube operating at V-band is presented. The interaction circuit employs three-slot doubly periodic staggered-ladder coupled-cavity slow-wave structure, and a 5 : 1 aspect-ratio sheet electron beam is used to interact with the circuit. Combined with design of the well-matched input and output couplers, a 3-D particle-in-cell model of the sheet-beam coupled-cavity traveling-wave tube is constructed. The electromagnetic characteristics and the beam-wave interaction of the tube are investigated. From our calculations, this tube can produce saturated output power over 630 Watts ranging from 58 GHz to 64 GHz when the cathode voltage and beam current are set to 13.2 kV and 300 mA, respectively. The corresponding saturated gain and electron efficiency can reach over 32.5 dB and 15.9%. Compared with the circular beam devices, the designed sheet-beam TWT has absolute advantage in power capability, and also it is more competitive in bandwidth and electron efficiency.

1. Kornfeld, G. K., E. Bosch, W. Gerum, and G. Fleury, "60-GHz space TWT to address future market," IEEE Trans. Electron Devices, Vol. 48, No. 1, Jan. 2001.
doi:10.1109/16.892169 Google Scholar

2. Kesari, V., "Beam-absent analysis of disc-loaded-coaxial waveguide for application in gyro-TWT (Part-1)," Progress In Electromagnetics Research, Vol. 109, 211-227, 2010.
doi:10.2528/PIER10071305 Google Scholar

3. Kesari, V., "Beam-present analysis of disc-loaded-coaxial waveguide for application in gyro-TWT (Part-2)," Progress In Electromagnetics Research, Vol. 109, 229-243, 2010.
doi:10.2528/PIER10071505 Google Scholar

4. Kesari, V. and J. P. Keshari, "Analysis of a circular waveguide loaded with dielectric and metal discs," Progress In Electromagnetics Research, Vol. 111, 253-269, 2011.
doi:10.2528/PIER10110207 Google Scholar

5. Mustafa, F. and A. M. Hashim, "Properties of electromagnetic fields and effective permittivity excited by drifting plasma waves in semiconductor-insulator interface structure and equivalent transmission line technique for multi-layered structure," Progress In Electromagnetics Research, Vol. 104, 403-425, 2010.
doi:10.2528/PIER10041504 Google Scholar

6. Mineo, M., A. Di Carlo, and C. Paoloni, "Analytical design method for corrugated rectangular waveguide SWS THz vacuum tubes," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 17--18, 2479-2494, 2010.
doi:10.1163/156939310793675745 Google Scholar

7. Li, Z., J. H. Wang, F. Li, Z. Zhang, and M. Chen, "A new insight into the radiation mechanism of fast and slow traveling waves," Journal of Electromagnetic Waves and Applications, Vol. 25, No. 13, 1874-1885, 2011.
doi:10.1163/156939311797454006 Google Scholar

8. Shi, Z. J., Z. Q. Yang, F. Lan, G. Xi, F. Tao, and Z. Liang, "Investigation of a 30-GHz relativistic diffraction generator with a coaxial reflector," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 17--18, 2453-2462, 2010.
doi:10.1163/156939310793675682 Google Scholar

9. Malek, F., "The analytical design of a folded waveguide traveling wave tube and small signal gain analysis using Madey's theorem," Progress In Electromagnetics Research, Vol. 98, 137-162, 2009.
doi:10.2528/PIER09092604 Google Scholar

10. Wilson, J. D., P. Ramins, and D. A. Force, "A high-effciency 59 to 64 GHz TWT for intersatellite communications," Proc. IEDM Tech. Dig., 585-588, 1991. Google Scholar

11. Liu, Y., Y. B. Gong, Y. Y. Wei, J. Xu, Z. Y. Duan, and W. X. Wang, "Design of a 100-W V-band coupled-cavity," China-Japan Joint Microwave Conference (CJMW), 458-460, Hangzhou, China, 2011.

12. Cooke, S. J., B. Levush, T. M. Antonsen, and Jr., "A coupled-cavity slow-wave structure for sheet-beam devices," Proc. IEEE Int. Vac. Electron. Conf., 487-488, Monterey, CA, 2006.

13. Larsen, P. B., D. K. Abe, S. J. Cooke, B. Levush, T. M. Antonsen, Jr., and R. E. Myers, "Characterization of a Ka-band sheet-beam coupled-cavity slow-wave structure," IEEE Trans. Plasma Sci., Vol. 38, No. 6, 1244-1254, Jun. 2010.
doi:10.1109/TPS.2010.2043690 Google Scholar

14. Shin, Y. M., L. R. Barnett, N. C. Luhmann, and Jr., "Phase-shift traveling-wave-tube circuit for ultrawideband high-power submillimeter-wave generation," IEEE Trans. Electron Devices, Vol. 56, No. 5, 706-712, May 2009.
doi:10.1109/TED.2009.2015404 Google Scholar

15. Han, S. T., K. H. Jang, J. K. So, J. I. Kim, Y. M. Shin, N. M. Ryskin, S. S. Chang, and G. S. Park, "Low-voltage operation of ka-band folded waveguide traveling-wave tube," IEEE Trans. Plasma Sci., Vol. 32, No. 1, 60-66, Feb. 2004.
doi:10.1109/TPS.2004.823978 Google Scholar

16. Kim, H. J., H. J. Kim, and J. J. Choi, "MAGIC3D simulations of a 500-W Ka-band coupled-cavity traveling-wave tube," IEEE Trans. Electron Devices, Vol. 56, No. 1, Jan. 2009. Google Scholar

17. Ansoft HFSS User's Reference, Ansoft Corp. [Online] Available: http://www.ansoft.com.cn/.

18. CST MWS Tutorials, CST Corp. [Online] Available: http://www.cst-china.cn/.

19. CST PS Tutorials, CST Corp. [Online] Available: http://www.cst-china.cn/.

20. James, B. G. and P. Kolda, "A ladder circuit coupled-cavity TWT at 80--100 GHz," Proc. IEDM Tech. Dig., Vol. 32, 494-497, 1986. Google Scholar

21. Booske, J. H., M. C. Converse, C. L. Kory, C. T. Chevalier, D. A. Gallagher, K. E. Kreischer, V. O. Heinen, and S. Bhattacharjee, "Accurate parametric modeling of folded waveguide circuits for millimeter wave traveling wave tubes," IEEE Trans. Electron Devices, Vol. 52, No. 5, 685-693, May 2005.
doi:10.1109/TED.2005.845798 Google Scholar

22. Pierce, J. R., Traveling-wave Tubes, Van Nostrand, 1965.

23. Christie, V. L., M. Sumathy, L. Kumar, and S. Prasad, "Optimization of waveguide coupler for coupled-cavity TWT using artificial neural network," Proc. IEEE International Vacuum Electronics Conference (IVEC), 263-264, 2010.
doi:10.1109/IVELEC.2010.5503501 Google Scholar

24. Kageyama, T., "The design of the transition region in coupled-cavity TWT," Proc. IEEE International Vacuum Electronics Conference (IVEC), 102-103, 2002. Google Scholar

25. Larsen, P. B., D. K. Abe, B. Levush, T. M. Antosen, and Jr., "Coupling a waveguide input to a sheet-beam coupled-cavity slowe-wave structure," Proc. IEEE International Vacuum Electronics Conference (IVEC), 209-210, 2011.
doi:10.1109/IVEC.2011.5746949 Google Scholar

26. Wilson, J. D. and C. L. Kory, "Simulation of cold-test parameters and RF output power for a coupled-cavity traveling-wave tube," IEEE Trans. Electron Devices, Vol. 42, No. 11, Nov. 1995. Google Scholar

27. Tischer, F. J., "Excess conduction losses at millimeter wave-lengths," IEEE Trans. Microw. Theory Tech., Vol. 24, 853-858, Nov. 1976.
doi:10.1109/TMTT.1976.1128973 Google Scholar

28. Gilmour, A. S., Jr., Principles of Traveling-Wave Tubes, Artech House, 1994.

29. Nguyen, K. T., J. A. Pasour, T. M. Antonsen, Jr., P. B. Larsen, J. J. Petillo, and B. Levush, "Intense sheet electron beam transport in a uniform solenoidal magnetic field," IEEE Trans. Electron Devices, Vol. 55, No. 5, 744-752, May 2009.
doi:10.1109/TED.2009.2015420 Google Scholar

30. Wilson, J. D., "Design of high-efficiency wide-bandwidth coupled-cavity traveling-wave tube phase velocity tapers with simulated annealing algorithms," IEEE Trans. Electron Devices, Vol. 48, No. 1, Jan. 2001.
doi:10.1109/16.892174 Google Scholar

Dr. Yang Liu

Dr. Jin Xu

Prof. Yan-Yu Wei

Dr. Xiong Xu

Dr. Fei Shen

Dr. Minzhi Huang

Dr. Tao Tang

Dr. Wen-Xiang Wang

Dr. Yu-Bin Gong

Dr. Jinjun Feng