SAW phase/frequency modulation device having periodic micro structure on transmission region

Masahiro Miyashita; Teppei Onuki; Sumito Nagasawa; Hiroki Kuwano

doi:10.1299/kikaic.76.1942

SAW phase/frequency modulation device having periodic micro structure on transmission region

Masahiro Miyashita, Teppei Onuki, Sumito Nagasawa, Hiroki Kuwano

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

Abstract

In this paper, we studied basic characteristics of the SAW propagation. When periodic micro structures were formed on the SAW transmission region, the propagation characteristics were dynamically changed. The prototype devices based on this analysis were fabricated and demonstrated. Conventional SAW elements were consisted of IDTs on the piezoelectric material and its transmitting frequency was just determined by the pitch of the IDTs. The periodic micro structures formed on the SAW transmission region can modulate the SAW propagation. Since periodic micro structures are controlled dynamically using the MEMS techniques, phase, frequency and transmitting power of the SAW can be modified.

Original language	English
Pages (from-to)	1942-1944
Number of pages	3
Journal	Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume	76
Issue number	768
DOIs	https://doi.org/10.1299/kikaic.76.1942
Publication status	Published - 2010 Aug
Externally published	Yes

Keywords

Band edge
Band gap
Phononic crystal
Surface acoustic wave

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1299/kikaic.76.1942

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SAW phase/frequency modulation device having periodic micro structure on transmission region. / Miyashita, Masahiro; Onuki, Teppei; Nagasawa, Sumito; Kuwano, Hiroki.

In: Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, Vol. 76, No. 768, 08.2010, p. 1942-1944.

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

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AB - In this paper, we studied basic characteristics of the SAW propagation. When periodic micro structures were formed on the SAW transmission region, the propagation characteristics were dynamically changed. The prototype devices based on this analysis were fabricated and demonstrated. Conventional SAW elements were consisted of IDTs on the piezoelectric material and its transmitting frequency was just determined by the pitch of the IDTs. The periodic micro structures formed on the SAW transmission region can modulate the SAW propagation. Since periodic micro structures are controlled dynamically using the MEMS techniques, phase, frequency and transmitting power of the SAW can be modified.

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KW - Band gap

KW - Phononic crystal

KW - Surface acoustic wave

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JO - Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C

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SAW phase/frequency modulation device having periodic micro structure on transmission region

Abstract

Keywords

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