Surface Acoustic Waves on Ferroelectric Superlattices

铁电超晶格上的表面声波

• 批准号: 9261301
• 负责人: Clinton Hartmann
• 金额: $ 5万
• 依托单位: Hartmann Research Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-01 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9261301&HistoricalAwards=false
• 关键词: Surface; Acoustic; Waves; Ferroelectric; Superlattices

Superlattice based acoustic wave devices are expected to form the basis of a major breakthrough in the field of RF filters, RF signal processing, and RF frequency sources. This technology should move the maximum operating frequency for Surface Acoustic Wave devices well into the microwave range by overcoming the barrier posed by the fabrication difficulties and the electrical resistance losses associated with small electrode geometries in the 0.1 micron range. A key technical feature of acoustic waves in a properly designed superlattice structure is that they can have a phase velocity up to 10X higher than the normal acoustic waves. This will remove the current high frequency limitation on Surface Acoustic Wave devices because of the corresponding increase in the sizes of electrode geometries required. The proposed effort is based on an innovative method for producing the required superlattice structure. The risk associated with the effort is that it may take more effort than can be funded under a single SBIR program to perform a successful demonstration of this new technology. However, the technical risk is judged to be small because the proposed approach is based on well established physical principles. This program should have a high payoff in that the proposed effort would mark the beginning of a whole new field of endeaver in acoustics and is expected to yield rich dividents in numerous areas.

超晶格声学 波器件预计将 形成一个专业的基础 领域的突破 RF滤波器、RF信号 处理和RF频率 源 这项技术 应该最大限度地 操作频率 表面声波器件 微波范围内 通过克服障碍 由制造 困难和 电阻损耗 与小 电极几何形状， 0.1微米范围。 一个关键 声学技术特点 波浪在一个适当设计的 超晶格结构是， 它们的相速度 最高可达10倍 正常声波 这 将消除目前的高 频率限制 表面声波器件 由于相应的 增加的规模 需要电极几何形状。 拟议的努力是基于 一种创新的方法， 产生所需 超晶格结构 的 相关风险 努力是，它可能需要 投入的精力超过了可以提供的资金 在单一SBIR计划下， 执行成功的 展示这一新的 技术. 但 技术风险被认为是 小，因为建议 方法基于良好的 建立物理 原则 这个程序 应该有很高的回报， 建议的努力将 标志着一个整体 开拓新领域 声学，预计将 产生丰厚的股息 许多领域。