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首页> 外文期刊>Journal of Applied Physics >Acoustic resonator based on periodically poled transducers: Concept and analysis
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Acoustic resonator based on periodically poled transducers: Concept and analysis

机译：基于周期性极化换能器的声谐振器：概念与分析

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摘要

The demand for highly coupled high quality acoustic wave devices for radio-frequency (RF) signal processing based on passive devices has generated a strong innovative activity, yielding the investigation of new excitation principles and waveguide structures. Periodically poled transducers (PPTs) have been recently investigated [E. Courjon et al., J. Appl. Phys. 102, 114107 (2007)], as an alternative to classical interdigital transducers (IDTs) for the excitation and detection of guided acoustic waves. PPTs have two principal advantages compared to IDTs: the robustness of the excitation versus defects or surface contamination and the possibility to excite waves exhibiting a wavelength equal to the poling period. Here a new acoustic resonator concept is suggested, allowing high frequency operation with a simplified package. The idea consists of using a waveguide based on a PPT fabricated on a ferroelectric single-crystal substrate such as lithium niobate or tantalate inserted between two single-crystal substrates allowing the guidance of elastic waves without losses. The concept analysis points out optimum configurations of the structure allowing the excitation of elastic waves compatible with RF applications.
机译：对基于无源器件的用于射频（RF）信号处理的高耦合高质量声波器件的需求已产生了强大的创新活动，从而对新的激励原理和波导结构进行了研究。最近对周期性极化换能器（PPT）进行了研究[E. Courjon等人，J.Appl.Chem。物理102，114107（2007）]，作为经典叉指换能器（IDT）的替代品，用于激励和检测引导声波。与IDT相比，PPT具有两个主要优点：激发相对于缺陷或表面污染的鲁棒性以及激发波长等于极化周期的波的可能性。这里提出了一种新的声谐振器概念，它允许采用简化的封装进行高频工作。该想法包括使用基于PPT的波导，该PPT是在铁电单晶基板（例如铌酸锂或钽酸铁）上制造的，该PPT插入两个单晶基板之间，从而可以在无损失的情况下引导弹性波。概念分析指出了结构的最佳配置，可以激发与RF应用兼容的弹性波。

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  • 来源
    《Journal of Applied Physics》 |2012年第6期|p.064106.1-064106.6|共6页
  • 作者

    F. Bassignot; E. Courjon; G. Ulliac; S. Ballandras; J.-M. Lesage; R. Petit;

  • 作者单位

    FEMTO-ST, UMR 6174, CNRS-UFC-ENSMM-UTBM, Besancon, France;

    FEMTO-ST, UMR 6174, CNRS-UFC-ENSMM-UTBM, Besancon, France;

    FEMTO-ST, UMR 6174, CNRS-UFC-ENSMM-UTBM, Besancon, France;

    FEMTO-ST, UMR 6174, CNRS-UFC-ENSMM-UTBM, Besancon, France;

    MC/CO, DGA, Rennes, France;

    MC/CO, DGA, Rennes, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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