Theoretical analysis of SAW propagation characteristics under the strained medium and applications for high temperature stable high coupling SAW substrates

K. Yamanouchi, K. Kotani, I. I. Odagawa, Y. Cho

研究成果: Paper査読

抄録

The important properties required for SAW substrates are a large electromechanical coupling coefficient (k2), small temperature coefficient of frequency (TCF), low propagation loss, etc. LiNbO3 and LiTaO3 have good properties as the SAW substrates with a large size. Unfortunately these possess the defect of large values of TCF. In this paper, SAW bonded composite substrates with a large k2, small TCF, low propagation loss and no dispersion using conventional bonders are investigated theoretically and experimentally. The propagation characteristics of SAW under the strained piezoelectric crystal using the higher-order elasticity theory have been analyzed. The theoretical results show zero TCT on LiNbO3/SiO3 substrates. The experimental results of LiNbO3/glass substrate showed TCF of 19ppm/ C. The propagation properties were almost the same as those of the single crystal.

本文言語English
ページ471-474
ページ数4
出版ステータスPublished - 2000 12 1
イベント12th IEEE International Symposium on Applications of Ferroelectrics - Honolulu, HI, United States
継続期間: 2000 7 212000 8 2

Other

Other12th IEEE International Symposium on Applications of Ferroelectrics
国/地域United States
CityHonolulu, HI
Period00/7/2100/8/2

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

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