Improvement of characteristics of leaky surface acoustic wave on LiTaO 3

Tetsuya Kimura, Michio Kadota, Yasuyuki Ida

Research output: Contribution to journalArticle

Abstract

Leaky surface acoustic wave (LSAW) devices on Al-electrode/36-48° YX-LiTaO3 substrates have seen wide use as filters and duplexers in cell phones because they possess a suitable electromechanical coupling factor and reflection coefficient, and a good Q factor for cell phones. In this paper, a new LSAW structure consisting of upper Al electrodes stacked on lower grooved Cu electrodes in LiTaO3 is proposed and compared with Al electrodes (0.1 λ)/42° YX-LiTaO3, which have been considered the best structure. We have been able to improve the characteristics of the LSAW.

Original languageEnglish
Pages (from-to)25-31
Number of pages7
JournalElectronics and Communications in Japan
Volume96
Issue number2
DOIs
Publication statusPublished - 2013 Feb 1

Keywords

  • LiTaO
  • grooved electrodes
  • leaky surface acoustic wave
  • resonator.

ASJC Scopus subject areas

  • Signal Processing
  • Physics and Astronomy(all)
  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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