Periodicity-suppressing effect of periodic lossy-dielectric-loaded cylindrical waveguide

doi:10.1088/1674-1056/19/4/048703

Abstract Periodic dielectric-loaded waveguide is one of the diaphragmatic waveguides. For the excellent mode-selective propagation ability, it is of value for applications in gyrotron-traveling-wave amplifiers (gyro-TWT), accelerators, and other microwave propagation systems. This paper focuses on studying the application of the strong lossy-dielectric-loaded periodic waveguide in millimeter-wave gyro-TWT. It is revealed that due to the lossy property of the dielectric, the energy in the dielectric slots is absorbed effectively and the high order Bloch harmonics induced by the periodicity of the structure are suppressed, which changes the discrete spectrum under lossless condition into a continuous one. As a result, the periodicity of the system is severely suppressed and a mode in the hollow region could be approximated by a fast wave mode in an empty waveguide. These results bring specific guidance for the applications of the lossy dielectric-loaded waveguide in gyro-TWTs and other devices.

Keywords: millimeter wave lossy dielectric Bloch harmonic gyrotron-traveling-wave amplifier

Received: 19 August 2009
Revised: 22 September 2009
Accepted manuscript online:

PACS:	84.40.Az	(Waveguides, transmission lines, striplines)
	84.40.Ik	(Masers; gyrotrons (cyclotron-resonance masers))
	77.22.Gm	(Dielectric loss and relaxation)
	84.40.Fe	(Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos.~60871051, 60871047 and 60971072).

Cite this article:

Du Chao-Hai(杜朝海), Liu Pu-Kun(刘濮鲲), and Xue Qian-Zhong(薛谦忠) Periodicity-suppressing effect of periodic lossy-dielectric-loaded cylindrical waveguide 2010 Chin. Phys. B 19 048703

[1]	Ibanescu M, Fink Y, Fan S, Thomas E L and Joannopoulos J D 2000 Science 289 5478
[2]	Miyagi M, Hongo A and Kawakami S 1983 IEEE J. Quantum Electron QE-19 2
[3]	Calame J P, Garven M, Danly B G, Levush B and Nguyen K T 2002 IEEE Trans. Electron Devices 49 8
[4]	Jiao C Q and Luo J R 2006 Appl. Phys. Lett. 88 06115
[5]	Jiao C Q and Luo J R 2006 Acta Phys. Sin. 55 6361 (in Chinese)
[6]	Huang H J 1963 Microwave Fundamentals (Beijing: Science Press) pp.140--141 (in Chinese)
[7]	Du C H, Xue Q Z and Liu P K 2008 IEEE Device Lett. 29 11
[8]	Du C H, Xue Q Z, Liu P K and Wang M H 2009 IEEE Trans. Electron Devices 56 5
[9]	Chu K R 2004 Rev. Mod. Phys. 76 2
[10]	Du C H, Liu P K and Xue Q Z 2008 Phys. Plasmas 15 123107
[11]	Du C H and Liu P K 2009 Phys. Plasmas 16 073104
[12]	Garven M and Calame J P 2002 IEEE Trans. Plasma Sci. 30 3
[13]	Thumm M K and Kasparek W 2002 IEEE Trans. Plasma Sci. 30 3
[14]	Chu K R and Chen H Y 1998 Phys. Rev. Lett. 81 21
[15]	Lai G J and Liu P K 2006 Acta Phys. Sin. 55 521 (in Chinese)
[16]	Lai G J and Liu P K 2007 Acta Phys. Sin. 56 4516 (in Chinese)
[17]	Tigelis I G and Vomvoridis J L 1998 IEEE Trans. Plasma Sci. 26 3
[18]	Yeh P, Yariv A and Marom E 1978 J. Opt. Soc. Am. 68 9
[19]	Yan R, Luo Y, Li J, Pu Y L, Wang J X, Lei C J and Liu Y H 2008 Acta Phys. Sin. 57 460 (in Chinese)

[1]	High-power TM₀₁ millimeter wave pulse sensor in circular waveguide Wang Guang-Qiang (王光强), Zhu Xiang-Qin (朱湘琴), Chen Zai-Gao (陈再高), Wang Xue-Feng (王雪锋), Zhang Li-Jun (张黎军). Chin. Phys. B, 2015, 24(9): 098701.
[2]	An open-styled dielectric-lined azimuthally periodic circular waveguide for a millimeter wave traveling-wave tube Liu Yang(刘漾), Wei Yan-Yu(魏彦玉), Xu Jin(徐进), Yin Hai-Rong(殷海荣), Yue Ling-Na(岳玲娜), Gong Yu-Bin(宫玉彬), and Wang Wen-Xiang(王文祥) . Chin. Phys. B, 2012, 21(4): 048403.
[3]	Millimeter and sub-millimeter wave frequency selective surface beamsplitter for geostationary orbit microwave radiometer Cui Guang-Bin (崔广斌), Zhao Hai-Bo (赵海博), Zhang Yong-Fang (张勇芳), Miao Jun-Gang (苗俊刚 ). Chin. Phys. B, 2012, 21(11): 114101.
[4]	Simulations of a two-stream backward-wave oscillator with a slot-hole structure Shi Zong-Jun(史宗君), Tang Xiao-Pin(唐效频), Yang Zi-Qiang(杨梓强), Lan Feng(兰峰), and Liang Zheng(梁正) . Chin. Phys. B, 2012, 21(1): 018401.
[5]	Investigation of a wideband folded double-ridged waveguide slow-wave system He Jun(何俊), Wei Yan-Yu(魏彦玉), Gong Yu-Bin(宫玉彬), and Wang Wen-Xiang(王文祥). Chin. Phys. B, 2011, 20(5): 054102.
[6]	An improved formula for the surface resistance of normal metals at millimetre wavelengths Zhang Xiao-Xia(张晓霞), Pan Wei(潘炜), and Liu Yong-Zhi(刘永智). Chin. Phys. B, 2007, 16(1): 236-239.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

Periodicity-suppressing effect of periodic lossy-dielectric-loaded cylindrical waveguide

Cite this article:

Online attention