Acoustic wave devices using periodical poled Z-cut LiTaO3 plate

Michio Kadota, Takashi Ogami, Kansho Yamamoto, Yasuo Cho

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Though acoustic wave devices using a periodical poled Pb(Zix, Ti1-x)O3 (PZT) ceramic plate on Si substrate, a periodical poled Pb(Zr0.2Ti0.8)O3 thin film on (001)SrTiO3 substrate, and a periodical poled Z-LiNbO3 substrate have been reported, their frequency responses were very weak as 0.1 to 3dB. It is considered that because their periodical poled devices have neither electrode fingers of intergidital transducers (IDTs) nor grating electrode reflectors, they do not have any effective reflection to realize a good frequency response, while conventional SAW devices have them. This time, authors have proposed an effective reflector for the periodical poled substrate device and applied it to a resonator and a resonator filter using a periodical poled Z-plane LiTaO3 plate, which is different from previously reported substrates. As the result, authors realized the resonator and the resonator filter having good frequency characteristics such as an impedance ratio of 33dB, and an insertion loss of 2.6 dB and a relative bandwidth of 2.2 %, respectively, for the first time.

Original languageEnglish
Title of host publication2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum
Pages919-922
Number of pages4
DOIs
Publication statusPublished - 2009 Nov 19
Event2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum - Besancon, France
Duration: 2009 Apr 202009 Apr 24

Publication series

Name2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum

Other

Other2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum
CountryFrance
CityBesancon
Period09/4/2009/4/24

Keywords

  • Periodical poled Z-LiTaO
  • Reflector
  • Resonator
  • Resonator filter

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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  • Cite this

    Kadota, M., Ogami, T., Yamamoto, K., & Cho, Y. (2009). Acoustic wave devices using periodical poled Z-cut LiTaO3 plate. In 2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum (pp. 919-922). [5168322] (2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum). https://doi.org/10.1109/FREQ.2009.5168322