EQUIVALENT CIRCUIT PARAMETERS OF SURFACE-ACOUSTIC-WAVE INTERDIGITAL TRANSDUCERS FOR ZnO/DIAMOND AND SiO2/ZnO/DIAMOND STRUCTURES

EQUIVALENT CIRCUIT PARAMETERS OF SURFACE-ACOUSTIC-WAVE INTERDIGITAL TRANSDUCERS FOR ZnO/DIAMOND AND SiO2/ZnO/DIAMOND STRUCTURES

Equivalent circuit parameters of surface-acoustic-wave transducers are reported for the [interdigital-transducer (IDT)]/ZnO/diamond, ZnO/IDT/diamond, SiO2/IDT/ZnO/diamond and SiO2/ZnO/IDT/diamond structures. The admittance mismatch, normalized susceptance and transformer turns ratio are calculated f...

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Veröffentlicht in:Jpn.J.Appl.Phys ,Part 1. Vol. 41, no. 5B, pp. 3489-3493. 2002 Part 1. Vol. 41, no. 5B, pp. 3489-3493. 2002, 2002, Vol.41 (5B), p.3489-3493
Hauptverfasser: Nakahata, H, Hachigo, A, Fujii, S, Shikata, S
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container_title Jpn.J.Appl.Phys ,Part 1. Vol. 41, no. 5B, pp. 3489-3493. 2002
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creator Nakahata, H
Hachigo, A
Fujii, S
Shikata, S
description Equivalent circuit parameters of surface-acoustic-wave transducers are reported for the [interdigital-transducer (IDT)]/ZnO/diamond, ZnO/IDT/diamond, SiO2/IDT/ZnO/diamond and SiO2/ZnO/IDT/diamond structures. The admittance mismatch, normalized susceptance and transformer turns ratio are calculated for each structure by applying the finite-element method (FEM). Their dependences on the thicknesses of the Al electrode, ZnO and SiO2 are examined. Experiments are also carried out to evaluate the admittance mismatch, the results of which agree with the calculated data. These structures have large values of admittance mismatch compared with those of conventional surface acoustic wave (SAW) materials such as LiTaO3, LiNbO3 and quartz. 14 refs.
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The admittance mismatch, normalized susceptance and transformer turns ratio are calculated for each structure by applying the finite-element method (FEM). Their dependences on the thicknesses of the Al electrode, ZnO and SiO2 are examined. Experiments are also carried out to evaluate the admittance mismatch, the results of which agree with the calculated data. These structures have large values of admittance mismatch compared with those of conventional surface acoustic wave (SAW) materials such as LiTaO3, LiNbO3 and quartz. 14 refs.</description><identifier>ISSN: 0021-4922</identifier><identifier>DOI: 10.1143/jjap.41.3489</identifier><language>eng</language><ispartof>Jpn.J.Appl.Phys ,Part 1. 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title EQUIVALENT CIRCUIT PARAMETERS OF SURFACE-ACOUSTIC-WAVE INTERDIGITAL TRANSDUCERS FOR ZnO/DIAMOND AND SiO2/ZnO/DIAMOND STRUCTURES
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