Examination of Phonon Dissipation in 33 GHz Overmoded Bulk Acoustic Resonators
Examination of Phonon Dissipation in 33 GHz Overmoded Bulk Acoustic Resonators
复制标题
33 GHz 过调制体声学谐振器中声子耗散的检查
DOI：
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
G. Piazza
中科院分区：
文献类型：
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作者：
Zachary Schaffer;A. Hassanien;G. Piazza
在这项工作中，我们研究质量因子（$Q$）在过模体声波谐振器（OBAR）工作在33 GHz的制造设备，通过建模和测量隔离损耗机制。使用材料分析模型和由有限元分析确定的能量分布的组合来模拟内在和外在损耗机制。然后测量具有不同面积和纵横比的制造的器件。最后，器件在295 K至12.5 K的温度范围内进行了表征。通过比较模型和测量之间的几何依赖性，我们得出结论，锚和欧姆损失是不显着的，在这些设备。然而，在测量的设备中，低得多的热依赖性表明固有损耗模型不能完全描述这些设备中的损耗。需要进一步研究微波频率下材料的固有阻尼。
In this work we examine quality factor ($Q$) in an overmoded bulk acoustic resonator (OBAR) operating at 33 GHz through modeling and measurement of fabricated devices to isolate loss mechanisms. Intrinsic and extrinsic loss mechanisms are modeled using a combination of material analytical models and energy distribution determined by finite element analysis. Fabricated devices with varying area and aspect ratio are then measured. Finally, devices are characterized over temperature from 295 K to 12.5 K. By comparing geometric dependencies between models and measurements we conclude anchor and ohmic losses are not significant in these devices. However, much lower thermal dependence in measured devices indicate intrinsic loss models do not fully describe losses in these devices. Further investigation in intrinsic damping in materials at microwave frequencies are needed.
33 GHz 过调制体声学谐振器
影响因子：
3
作者：
Schaffer, Zachary;Simeoni, Pietro;Piazza, Gianluca
通讯作者：
Piazza, Gianluca