Study on electromechanical coupling coefficients of surface acoustic waves in layered systems

被引：3
作者：
Chen, YY [1 ]
Hsu, JC [1 ]
Wu, TT [1 ]
机构：
[1] Natl Taiwan Univ, Inst Appl Mech, Taipei 106, Taiwan
来源：
JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS | 2004年 / 27卷 / 06期
关键词：
effective permittivity; electromechanical coupling coefficient;
D O I：
10.1080/02533839.2004.9670933
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of this paper is to utilize the effective permittivity approach to calculate the electromechanical coupling coefficients of surface acoustic waves in layered systems. The effective permittivity offers a direct relation to the voltage-induced charge density at the interface, and can be used to calculate the phase velocity dispersion and the electromechanical coupling coefficients of a layered piezoelectric medium exactly. In this paper, the formulation based on the matrix method for calculating the effective permittivity of a layered piezoelectric medium with three types of electrode arrangements is given first. Then, based on this formulation, we calculated phase velocity dispersions of the generalized SAW mode and the HVPSAW mode in layered systems of ZnO/Diamond and LiNbO3/Diamond. In addition, the electromechanical coupling coefficients of surface acoustic waves in the aforementioned layered systems with three different electrical boundary conditions were analyzed and discussed.
引用
收藏
页码：823 / 832
页数：10
相关论文
共 16 条
[1]  
Adler EL, 1995, ULTRASON, P341, DOI 10.1109/ULTSYM.1995.495594
[2]   MATRIX-METHODS APPLIED TO ACOUSTIC-WAVES IN MULTILAYERS [J].
ADLER, EL .
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1990, 37 (06) :485-490
[3]   SAW AND PSEUDO-SAW PROPERTIES USING MATRIX-METHODS [J].
ADLER, EL .
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1994, 41 (05) :699-705
[4]   PROPAGATION OF ACOUSTIC SURFACE-WAVES IN MULTILAYERS - MATRIX DESCRIPTION [J].
FAHMY, AH ;
ADLER, EL .
APPLIED PHYSICS LETTERS, 1973, 22 (10) :495-497
[5]  
Honein G., 1991, J. Intell. Mater. Syst. Struct, V2, P542, DOI [10.1177/1045389X9100200408, DOI 10.1177/1045389X9100200408]
[6]   SURFACE WAVES IN PIEZOELECTRICS [J].
INGEBRIGTSEN, KA .
JOURNAL OF APPLIED PHYSICS, 1969, 40 (07) :2681-+
[7]   ELASTIC SURFACE WAVES IN CRYSTALS [J].
INGEBRIGTSEN, KA ;
TONNING, A .
PHYSICAL REVIEW, 1969, 184 (03) :942-+
[8]  
MATTHEWS H, 1977, SURFACE WAVE FILTERS, P66
[9]  
MORTAN DP, 1991, SURFACE WAVE DEVICES
[10]  
Nakahata H, 1995, ULTRASON, P361, DOI 10.1109/ULTSYM.1995.495599
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