SAW phase/frequency modulation device having periodic micro structure on transmission region

Masahiro Miyashita, Teppei Onuki, Sumito Nagasawa, Hiroki Kuwano

Research output: Contribution to journalArticle

Abstract

In this paper, we studied basic characteristics of the SAW propagation. When periodic micro structures were formed on the SAW transmission region, the propagation characteristics were dynamically changed. The prototype devices based on this analysis were fabricated and demonstrated. Conventional SAW elements were consisted of IDTs on the piezoelectric material and its transmitting frequency was just determined by the pitch of the IDTs. The periodic micro structures formed on the SAW transmission region can modulate the SAW propagation. Since periodic micro structures are controlled dynamically using the MEMS techniques, phase, frequency and transmitting power of the SAW can be modified.

Original languageEnglish
Pages (from-to)1942-1944
Number of pages3
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume76
Issue number768
DOIs
Publication statusPublished - 2010 Aug
Externally publishedYes

Keywords

  • Band edge
  • Band gap
  • Phononic crystal
  • Surface acoustic wave

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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