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Abstracts
The paper presents an analysis of surface acoustic wave delay line. The line consists of two simple interdigital transducers placed on a ST-cut quartz plate. Mid-band operation frequency of the line is 74 MHz. The line will be applied for surface acoustic wave vibration sensor. At the immovable end of the plate there are electric signal feeds to both transducers. This is the cause of increase in signal value going directly between the transducers and the cause of line losses. By means of equivalent electric model of interdigital transducer a loss analysis of the line has been made at 50 Ω load. The analysis allows to minimize line losses by matching the transducers to 50 Ω impedance. This has been practically achieved by a design of transducer geometry and configuration matching 50 Ω impedance, by means of inductance. An analysis of repeated operation characteristics of two interdigital transducers has been made. A signal going directly through capacitance between transducers and signals reflected from the edge of piezoelectric substrate have been presented. Results of theoretical analysis have been compared with experimental examinations.
Discipline
- 77.65.Dq: Acoustoelectric effects and surface acoustic waves (SAW) in piezoelectrics(see also 43.35.Pt Surface waves in solids and liquids—in Acoustics Appendix; for surface acoustic wave transducers, see 43.38.Rh—in Acoustics Appendix; for acousto-optical effects, see 78.20.hb, and 43.35.Sx—in Acoustics Appendix)
- 68.35.Iv: Acoustical properties
Journal
Year
Volume
Issue
Pages
808-813
Physical description
Dates
published
2012-11
Contributors
author
- Institute of Electronic and Control Systems, Technical University of Częstochowa, Armii Krajowej 17, 02-240 Częstochowa, Poland
author
- Department of Civil Engineering, Military University of Technology, S. Kaliskiego 2, 00-908 Warsaw, Poland
author
- Institute of Electronic and Control Systems, Technical University of Częstochowa, Armii Krajowej 17, 02-240 Częstochowa, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv122n505kz