Microwave analysis based on parallel finite element method
Microwave analysis based on parallel finite element method
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DOI：
10.15748/jasse.6.215
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发表时间：
2019
影响因子：
0.5
通讯作者：
A. Takei;Isamu Higashi;M. Aikawa;Tomonori Yamada
中科院分区：
文献类型：
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作者：
A. Takei;Isamu Higashi;M. Aikawa;Tomonori Yamada
随着利用计算机进行电磁场分析的扩展，包含复杂形状的大空间也成为分析目标，对这些问题需要开发高精度的分析。因此，本文将目前最有效的吸收边界条件Berenger的PML应用于基于区域分解法的并行有限元方法，这是一种有效的微波频段分析方法。作为基础研究，我们开发了一个基于迭代区域分解法的并行有限元分析程序。在验证分析代码的准确性时，我们分析了团队研讨会问题29，这是一个基准问题，并确认获得了高度准确的解决方案。然后，以偶极子天线模型中加入了Berenger的PML的模型为分析对象，利用基于S参数的反射系数来评价PML的吸收性能。此外，通过将偶极子天线的指向性与理论解进行比较，对天线分析的准确性进行了评估。结果表明，所提出的微波分析方法是有效的。
With the expansion of electromagnetic field analysis using computers, large spaces that include complex shapes have also become an analysis target, and the development of a high-accuracy analysis is required for these problems. Therefore, in the present study, Berenger’s PML, which is currently the most effective absorbing boundary condition, is applied to the parallel finite element method based on the domain decomposition method, which is an effective analysis method for the microwave band. As a basic study, we developed an analysis code using a parallel finite element method based on the iterative domain decomposition method. In verifying the accuracy of the analysis code, we analyzed TEAM Workshop Problem 29, which is a benchmark problem, and confirmed that a highly accurate solution is obtained. Next, a model with Berenger’s PML added to the dipole antenna model is used as an analysis object, and the absorption performance of the PML is evaluated using a reflection coefficient based on the S parameter. Moreover, the accuracy of the antenna analysis is evaluated by comparing the directivity of the dipole antenna with the theoretical solution. As a result, the effectiveness of the proposed method for microwave analysis is confirmed.