Breaking the Barrier for Acoustic Resonators: High Performance Filters at Millimeter Waves

打破声学谐振器的障碍：毫米波高性能滤波器

• 批准号: 2133388
• 负责人: Gianluca Piazza
• 金额: $ 40.86万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-15 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2133388&HistoricalAwards=false
• 关键词: Breaking; Barrier; Acoustic; Resonators; Performance

Communication standards at millimeter waves are meant to revolutionize society by facilitating high speed data links for augmented and virtual reality, unmanned air vehicles and self-driving cars, remote health and infrastructure monitoring, and the broader Internet of Things. The millimeter wave systems that are being commercialized do not rely on filtering at the antenna element. It is predictable that as the number of deployed systems will increase, interferers and hence the lack of filtering will be a bottleneck for these communication systems, resulting in large power consumption by the baseband electronics. As more millimeter wave systems are deployed, and the spectrum is getting congested, increase power consumption will be required to handle interfering signals. The needs to eliminate interferers through mm-wave filtering at the antenna element will become a fundamental bottleneck to further deployment of these networks. The design and implementation of bandpass filters at these frequencies in the form factors required by on-chip/portable/wearable devices is particularly challenging. This research project proposes to use acoustic elements to deliver sharp filtering directly at each antenna element. If successful, this project will have broader impacts beyond the specific millimeter wave applications proposed herein. By overcoming the fundamental challenges associated with the design and synthesis of millimeter wave acoustic resonators, the research effort will devise a general resonator platform for investigating other phenomena associated with quantum information science, computing and sensing.Extending the range of operation of acoustic resonators to millimeter wave frequencies comes with fundamental questions related to the ability to operate at such high frequency with low loss and appropriate impedance levels. Attaining high performance at millimeter waves is a fundamental barrier for acoustic devices. Answering these questions calls for investigations into materials, nanofabrication processes and resonator designs that challenge the state-of-the-art in acoustic devices. The intellectual merit of this work consists in: investigating fundamental damping mechanisms in thin films of suspended structures at millimeter waves; devising innovative resonator designs that minimize damping while preserving resonator characteristic impedance matching; and developing nanofabrication methods that enable the co-existence of nanoscale features with micron-scale structures with high yields. The ultimate applied goal of this project is to devise a bandpass filter operating at millimeter waves using an ensemble of acoustic resonators arranged in a conventional ladder configuration. This project is also investigating various novel techniques for generating two nearby-frequency resonators and for real-time tuning of the filter bandwidth.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

毫米波的沟通标准旨在通过促进高速数据链接来彻底改变社会，以增强和虚拟现实，无人驾驶汽车和自动驾驶汽车，远程健康和基础设施监控以及更广泛的物联网。正在商业化的毫米波系统不依赖于天线元件的过滤。可以预见的是，随着部署系统的数量将增加，干扰器，因此缺乏过滤将成为这些通信系统的瓶颈，从而导致基带电子设备的大量功耗。随着更多的毫米波系统的部署，频谱变得拥挤，需要增加功耗来处理干扰信号。通过天线元件的MM波过滤消除干扰物的需求将成为进一步部署这些网络的基本瓶颈。在片上/便携式/可穿戴设备所需的形式因素中，在这些频率上的带通滤波器的设计和实现特别具有挑战性。该研究项目建议使用声学元素直接在每个天线元件上进行尖锐的过滤。如果成功的话，该项目将产生更广泛的影响，而不是本文提出的特定毫米波应用。通过克服与毫米波声音谐振器的设计和合成相关的基本挑战，研究工作将设计一个通用的谐振平台，用于调查与量子信息科学，计算和传感相关的其他现象，扩展了声音谐振器对毫米波频率的操作范围与毫米级别相关的较低的损失以及与较高的频率相关的较低的频率以及较高的频率频率以及较高的频率相关的范围。在毫米波下获得高性能是声学设备的基本障碍。回答这些问题，需要调查材料，纳米化过程和谐振器设计，这些设计挑战了声学设备中最新的材料。这项工作的智力优点在于：研究毫米波悬浮结构的薄膜中的基本阻尼机制；设计创新的谐振器设计，以最大程度地减少阻尼器，同时保持谐振器的特性阻抗匹配；并开发纳米制作方法，使纳米级特征与具有高产量的微米结构共存。该项目的最终应用目标是使用以传统梯子配置排列的声音谐振器合奏设计在毫米波下运行的带通滤波器。该项目还研究了各种新颖的技术，用于产生两个附近的频率谐振器，并针对过滤器带宽进行实时调整。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的智力优点和更广泛影响的审查标准通过评估来获得支持的。

项目成果

33 GHz Overmoded Bulk Acoustic Resonator

33 GHz 过调制体声学谐振器

• DOI: 10.1109/lmwc.2022.3166682
• 发表时间: 2022
• 期刊: IEEE Microwave and Wireless Components Letters
• 影响因子: 3
• 作者: Schaffer, Zachary;Simeoni, Pietro;Piazza, Gianluca
• 通讯作者: Piazza, Gianluca