Temperature characteristics of acoustic waves propagating in thin piezoelectric plates

被引：0
|
作者：
Kuznetsova, IE [1 ]
Zaitsev, BD [1 ]
Joshi, SG [1 ]
机构：
[1] Marquette Univ, EECE Dept, Milwaukee, WI 53201 USA
来源：
2001 IEEE ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1 AND 2 | 2001年
关键词：
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The temperature coefficient of delay (TCD) for lowest order plate wave modes, A(0), S-0, and SH0, in LiNbO3 crystal has been calculated. In almost all cases investigated so far TCD is found to be a weak function of the normalized plate thickness h/lambda (h = plate thickness, lambda= acoustic wavelength). The only exception occurs for the A(0) mode in X-Z and Y-Z plates. It is found that plate waves can provide higher K-2 and lower TCD than is possible with SAWs. For example, for SH0 mode in X-Y+170degrees lithium niobate K-2=0.29 and TCD=54 ppm/C-0. Experimental measurements of TCD for SH0 waves in Y-X lithium niobate are found in good agreement with theory.
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页码：157 / 160
页数：4
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