Mechanical transmission loss of the sole Bragg reflector by GHz pulse echo technique with thick SiO2delay line

Naoki Ishii, Keita Kondo, Motoshi Suzuki, Takahiko Yanagitani

研究成果: Conference contribution

抄録

Extraction of the experimental data of the sole Bragg reflector is complicated compared to the theoretical prediction of mechanical transmission loss of the sole Bragg reflector. This is because the property of a piezoelectric layer on Bragg reflector and that of the sole Bragg reflector is measured simultaneously in the standard impedance measurement. In this study, the method to evaluate the acoustic transmission loss of the sole Bragg reflector by using pulse echo technique with SiO2 delay line is proposed. A Sc0.40Al0.60N piezoelectric transducer whose acoustic conversion loss is 3.2 dB and fractional bandwidth is 56% was employed with two pairs Ta/SiO2 Bragg reflectors as a test sample. As a result, the experimental transmission loss of the sole Bragg reflector less than -20 dB was obtained. Experimentally extracted mechanical transmission loss agrees with the theoretical one.

本文言語English
ホスト出版物のタイトルIEEE MTT-S International Conference on Microwave Acoustics and Mechanics, IC-MAM 2022
出版社Institute of Electrical and Electronics Engineers Inc.
ページ82-85
ページ数4
ISBN(電子版)9781665468312
DOI
出版ステータスPublished - 2022
イベント1st IEEE MTT-S International Conference on Microwave Acoustics and Mechanics, IC-MAM 2022 - Munich, Germany
継続期間: 2022 7月 182022 7月 20

出版物シリーズ

名前IEEE MTT-S International Conference on Microwave Acoustics and Mechanics, IC-MAM 2022

Conference

Conference1st IEEE MTT-S International Conference on Microwave Acoustics and Mechanics, IC-MAM 2022
国/地域Germany
CityMunich
Period22/7/1822/7/20

ASJC Scopus subject areas

  • 計算力学
  • 電子工学および電気工学
  • 材料力学
  • 電子材料、光学材料、および磁性材料
  • 音響学および超音波学

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