分层级联技术在表面声波器件横向模式行为有限元分析中的应用

Use of Hierarchical Cascading Technique for FEM Analysis of Transverse Mode Behaviors in Surface Acoustic Wave Devices.

作者信息

Li Xinyi, Bao Jingfu, Huang Yulin, Zhang Benfeng, Omori Tatsuya, Hashimoto Ken-Ya

出版信息

IEEE Trans Ultrason Ferroelectr Freq Control. 2019 Jul 30. doi: 10.1109/TUFFC.2019.2932105.

DOI:10.1109/TUFFC.2019.2932105

Abstract

This paper describes application of the hierarchical cascading technique (HCT) to the 3D FEM analysis of transverse mode behaviors in surface acoustic wave (SAW) devices. Mirror cascading is proposed as a speed up technique for the HCT operation using the general purpose graphic processing unit (GPGPU). Two methods are implemented for the analysis; one is impedance calculation, and the other is calculation of SAW scattering coefficients at boundaries. It is demonstrated that HCT enables rapid calculation for successive simulation with scanning design parameters. Thus, techniques discussed in the paper are quite effective for optimization of device structures. It is also shown that GPGPU can accelerate HCT calculation dramatically, especially for 3D cases discussed in this paper.

摘要

本文描述了分层级联技术（HCT）在表面声波（SAW）器件横向模式行为的三维有限元分析中的应用。提出了镜像级联作为一种使用通用图形处理单元（GPGPU）加速HCT操作的技术。实现了两种分析方法；一种是阻抗计算，另一种是边界处SAW散射系数的计算。结果表明，HCT能够对扫描设计参数进行连续模拟的快速计算。因此，本文讨论的技术对于器件结构的优化非常有效。还表明，GPGPU可以显著加速HCT计算，特别是对于本文讨论的三维情况。