Acoustic wave devices using periodical poled Z-cut LiTaO3 plate

Michio Kadota; Takashi Ogami; Kansho Yamamoto; Yasuo Cho

doi:10.1109/FREQ.2009.5168322

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 proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Though acoustic wave devices using a periodical poled Pb(Zi_x, Ti_1-x)O₃ (PZT) ceramic plate on Si substrate, a periodical poled Pb(Zr_0.2Ti_0.8)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 language	English
Title of host publication	2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum
Pages	919-922
Number of pages	4
DOIs	https://doi.org/10.1109/FREQ.2009.5168322
Publication status	Published - 2009 Nov 19
Event	2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum - Besancon, France Duration: 2009 Apr 20 → 2009 Apr 24

Publication series

Name	2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum

Other

Other	2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum
Country/Territory	France
City	Besancon
Period	09/4/20 → 09/4/24

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

Access to Document

10.1109/FREQ.2009.5168322

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

Acoustic wave devices using periodical poled Z-cut LiTaO₃ plate. / Kadota, Michio; Ogami, Takashi; Yamamoto, Kansho et al.

2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum. 2009. p. 919-922 5168322 (2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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., 5168322, 2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum, pp. 919-922, 2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum, Besancon, France, 09/4/20. https://doi.org/10.1109/FREQ.2009.5168322

Kadota M, Ogami T, Yamamoto K, Cho Y. 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. 2009. p. 919-922. 5168322. (2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum). doi: 10.1109/FREQ.2009.5168322

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AB - 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.

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