DocumentCode :
2101987
Title :
Bulk wave excitation from finite length SAW transducers including massloading
Author :
Gamble, K.J. ; Malocha, Donald C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Central Florida Univ., Orlando, FL, USA
Volume :
1
fYear :
1999
fDate :
17-20 Oct. 1999
Firstpage :
77
Abstract :
A analysis of bulk wave generation from finite length transducers on YZ-LiNbO3 is presented. The effect of the metallic electrodes is taken into account using the Finite Element Method. The substrate is modeled using both analytical and numerical means. The simulation results suggest that thick electrodes (gold or aluminum) increase the electrical coupling of a uniform SAW transducer to the shear vertical bulk wave at approximately twice the SAW center frequency. Experimental data in the literature appears to support this assertion.
Keywords :
finite element analysis; lithium compounds; surface acoustic wave transducers; Al; Au; LiNbO3; LiNbO3 substrate; analytical model; bulk wave excitation; electrical coupling; finite element method; finite length SAW transducer; mass loading; metallic electrode; numerical simulation; shear vertical wave; Aluminum; Chebyshev approximation; Degradation; Electrodes; Frequency; Gold; Passband; Resonator filters; Surface acoustic waves; Transducers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE
Conference_Location :
Caesars Tahoe, NV
ISSN :
1051-0117
Print_ISBN :
0-7803-5722-1
Type :
conf
DOI :
10.1109/ULTSYM.1999.849360
Filename :
849360
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2101987
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