Improvement of characteristics of leaky surface acoustic wave on LiTaO 3

Tetsuya Kimura; Michio Kadota; Yasuyuki Ida

doi:10.1002/ecj.10409

Improvement of characteristics of leaky surface acoustic wave on LiTaO ₃

Tetsuya Kimura, Michio Kadota, Yasuyuki Ida

ENG - Robotics

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	25-31
Number of pages	7
Journal	Electronics and Communications in Japan
Volume	96
Issue number	2
DOIs	https://doi.org/10.1002/ecj.10409
Publication status	Published - 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

Access to Document

10.1002/ecj.10409

Cite this

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title = "Improvement of characteristics of leaky surface acoustic wave on LiTaO 3",

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.",

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AU - Kimura, Tetsuya

AU - Kadota, Michio

AU - Ida, Yasuyuki

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N2 - 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.

AB - 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.

KW - LiTaO

KW - grooved electrodes

KW - leaky surface acoustic wave

KW - resonator.

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