Analysis of surface acoustic wave properties of the rotated Y-cut langasite substrate

Akihiro Bungo, Chunyun Jian, Kunio Yamaguchi, Yoshihisa Sawada, Satoshi Uda, Yuri P. Pisarevsky

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)

Abstract

The propagation characteristics of Rayleigh waves on a Y-rotated La3Ga5SiO14 (langasite) substrate are evaluated with the use of newly obtained material constants. The calculated phase velocity, the power flow angle (PFA), the coupling electrome-chanical coefficient (K2), the temperature coefficient of delay (TCD) and the diffraction coefficient (y) are shown as contour maps. The revised numerical calculations were in much better agreement with the experimental results of the temperature characteristics on the langasite substrate with Euler angle (0°, 140°, ø). Moreover, the temperature characteristics as a function of the metal thickness were experimentally investigated. It was found that a thicker metal leads to a lower turnover temperature. Finally, an example of the frequency response of the transversal filter designed for IS95 is shown.

Original languageEnglish
Pages (from-to)3239-3243
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume38
Issue number5 B
DOIs
Publication statusPublished - 1999
Externally publishedYes

Keywords

  • LaGaSiO
  • Langasite
  • Surface acoustic wave
  • Temperature coefficient
  • Transversal filter
  • Turnover temperature

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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