Improvement of characteristics of leaky surface acoustic wave on LiTaO 3

Tetsuya Kimura, Michio Kadota, Yasuyuki Ida

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A Leaky surface acoustic wave (LSAW) on Al-electrodes/36-48°YX- LiTaO3 substrates have widely used as filters and duplexers in cell phones because of having a suitable electro-mechanical coupling factor, reflection coefficient and good Q-factor for cell phones. In this paper, a new LSAW structure consisted of upper Al-electrodes stacked on lower grooved Cu-electrodes in the LiTaO3 is proposed and compared with Al-electrodes (0.1)/42°YX-LiTaO3 which has been considered the best structure ever. As the result, authors have been able to improve characteristics of the LSAW.

Original languageEnglish
Pages (from-to)1115-1119
Number of pages5
JournalIEEJ Transactions on Electronics, Information and Systems
Volume131
Issue number6
DOIs
Publication statusPublished - 2011

Keywords

  • Grooved electrodes
  • Leaky surface acoustic wave
  • Resonator

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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