中国物理B ›› 2007, Vol. 16 ›› Issue (9): 2737-2744.doi: 10.1088/1009-1963/16/9/040

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

A method of designing photonic crystal grating slow-wave circuit for Ribbon--Beam microwave travelling wave amplifiers

殷海荣, 宫玉彬, 魏彦玉, 巩华荣, 岳玲娜, 路志刚, 黄民智, 王文祥   

  1. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610005, China
  • 收稿日期:2006-11-05 修回日期:2007-03-09 出版日期:2007-09-20 发布日期:2007-09-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos~60532010 and 60601005).

A method of designing photonic crystal grating slow-wave circuit for Ribbon--Beam microwave travelling wave amplifiers

Yin Hai-Rong(殷海荣)†, Gong Yu-Bin(宫玉彬), Wei Yan-Yu(魏彦玉), Gong Hua-Rong(巩华荣), Yue Ling-Na(岳玲娜), Lu Zhi-Gang(路志刚), Huang Min-Zhi(黄民智), and Wang Wen-Xiang(王文祥)   

  1. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610005, China
  • Received:2006-11-05 Revised:2007-03-09 Online:2007-09-20 Published:2007-09-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos~60532010 and 60601005).

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摘要： A method of designing a photonic crystal grating slow-wave circuit in which the cylinders of the 2D photonic crystals dot on a cross-sectional plane is established by calculating the band structures of the 2D photonic crystals, and the eigenfrequency of the equivalent waveguide grating. For calculating the band structures, the eigenvalue equations of the photonic crystals in the system of photonic crystal grating slow-wave circuit are derived in a special polarization mode. Two examples are taken to show the method. The design result is validated by the scattering parameters of the same circuit. The result indicates that there exists no photonic band gap if the metal gratings do not extend into the photonic crystals; the design of the circuit without the metal gratings extending into the photonic crystals is less flexible than that with the metal gratings extending into the photonic crystals.

Abstract: A method of designing a photonic crystal grating slow-wave circuit in which the cylinders of the 2D photonic crystals dot on a cross-sectional plane is established by calculating the band structures of the 2D photonic crystals, and the eigenfrequency of the equivalent waveguide grating. For calculating the band structures, the eigenvalue equations of the photonic crystals in the system of photonic crystal grating slow-wave circuit are derived in a special polarization mode. Two examples are taken to show the method. The design result is validated by the scattering parameters of the same circuit. The result indicates that there exists no photonic band gap if the metal gratings do not extend into the photonic crystals; the design of the circuit without the metal gratings extending into the photonic crystals is less flexible than that with the metal gratings extending into the photonic crystals.

Key words: TWTs, photonic crystals, millimetre-wave, THz, slow-wave circuit

中图分类号:  (Photonic bandgap materials)

  • 42.70.Qs
42.79.Dj (Gratings) 84.30.Le (Amplifiers)