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SAW在短路金属栅中传播时的衰减特性 被引量：1

Attenuation Characteristic of SAW Propagating under Short-circuited Grating
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摘要 以Hashimoto理论分析为基础,波速由栅条导纳的极点确定,给出了波数色散关系的确定方法。以36°YX-LiTaO3为算例,得到膜厚为不同值时的波数色散关系,说明其金属短路栅的机械反射和电反射是同相位的,且衰减随膜厚的增大而增大。 Based on Hashimoto＇s theory, velocity ot SAW is decided by searching poles of strip admittance, The method for analyzing dispersion relation of the SAW wavenumber is given and 36°YX-LiTaO3 is used for numerical example. The dispersion relation of wavenumber are obtained for different electrode thickness. This suggests that the mechanical reflection and electrical reflection for the short-circuited grating are in phase. With an increase in the film thickness, the attenuation increases.
作者 徐方迁 何世堂
机构地区 浙江传媒学院电子信息系 中国科学院声学研究所
出处 《压电与声光》 CSCD 北大核心 2008年第1期1-2,共2页 Piezoelectrics & Acoustooptics
基金 宁波市科技计划基金资助项目(2005A610009) 国家自然科学基金资助项目(10374100)
关键词 栅条导纳 色散关系 短路栅 strip admittance dispersion relation short-circuited grating
分类号 O426.9 [理学—声学]
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参考文献5

  • 1HASHIMOTO K Y. Surface acoustic wave devices in telecommunications modelling and simulation[M]. New York: Springer, 2000: 191-235.
  • 2BLФTEKJAER K, INGEBRIGESEN K A, SKEIE H. A method for analysing waves in structures consisting of metallic strips on dispersive media[J]. IEEE Trans Electron Devices, 1973, ED-20(12): 1133-1138.
  • 3BLФTEKJAER K, INGEBRIGESEN K A, SKEIE H. Acoustic surface waves in piezoelectric meterials with periodic metal strip on the surface[J]. IEEE Trans Electron Devices, 1973, ED-20(12): 1139-1146.
  • 4HASHIMOTO K, YAMAGUCHI M. Analysis of ex citation and propagation of acoustic waves under peri odic metallic-grating structure for SAW device model ing[C]. Proc IEEE Ultrason Symp, 1993:143-148.
  • 5HASHIMOTO K, YAMAGUCHI M. Precise simulation of surface transverse wave devices by discrete Green function theory[C]. Proc IEEE Uhrason Symp, 1994: 253-258.

同被引文献9

  • 1徐方迁,何世堂.64°YX-LiNbO_3基片上铜短路金属栅的色散特性[J].压电与声光,2006,28(5):509-511. 被引量：1
  • 2PLESSKY V P. A two parameter coupling-of-modes model for shear horizontal type SAW propagation in periodic gratings[C]//New York: Proc IEEE Ultrason Symp, 1993: 195-200.
  • 3ABBOTT B P, HASHIMOTO Ken-ya. A coupling-of- modes formalism for surface transverse wave devices [C]//New York: Proc IEEE Ultrason Syrup, 1995: 239-245.
  • 4HASHIMOTO K, YAMAGUCHI M. Precise simulation of surface transverse wave devices by discrete green function theory[C]//New York: Proc IEEE Ultrason Symp, 1994: 253-258.
  • 5BLφTEKJCER K, INGEBRIGESEN K A, SKEIE H. Acoustic surface waves in piezoelectric meterials with periodic metal strip on the surface[J]. IEEE Trans Electron Devices, 1973, ED-20(12): 1133-1138.
  • 6BLΦTEKJCER K, INGEBRIGESEN K A, SKEIE H. Acoustic surface waves in piezoelectric meterials with periodic metal strip on the surface[J]. IEEE Trans Electron Devices, 1973, ED-20(12):1139-1146.
  • 7HASHIMOTO K, YAMAGUCHI M. Analysis of excitation and propagation of acoustic waves under periodic metallic-grating structure for SAW device modeling[C]//New York: Proc IEEE Ultrason Symp, 1993 : 143-148.
  • 8HASHIMOTO Ken-ya. Surface acoustic wave devices in telecommunications modelling and simulation[C]// Washington: Copyright Springer-Verlag Berlin Heidelberg, 2000: 271-273.
  • 9CHEN D P, HAUS H A. Analysis of metal-strip SAW grating and transdueers[J]. IEEE Trans Sonies and Ultrason, 1985, SU-32: 395-408.

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压电与声光
2008年 第1期

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