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Experimental and theoretical analysis of SAW properties of the langasite substrate with Euler angle (0/spl deg/,140/spl deg/,/spl phi/)
- Source :
- 1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027).
- Publication Year :
- 1999
- Publisher :
- IEEE, 1999.
-
Abstract
- The numerical calculations using new material constants were in good agreement with the experimental results of the temperature-related SAW properties on the langasite substrate with Euler angle (0°,140°,φ). The temperature-related SAW properties as a function of the IDT metal thickness were also experimentally investigated. It was revealed that a thicker metal leads to a lower turnover temperature. Furthermore we investigated the NSPUDT (natural single phase unidirectional transducer) properties of langasite with Euler angle (0°,140°,25°) experimentally. Its directivity was almost equal to one estimated by the calculation based on the coupling of mode (COM) model. This NSPUDT property is a promising feature for the low-loss IF filter.
Details
- Database :
- OpenAIRE
- Journal :
- 1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027)
- Accession number :
- edsair.doi...........9bd5d6ed4dafb4f040aafdfc798729f3