电子学报 ›› 2021, Vol. 49 ›› Issue (1): 58-63.DOI: 10.12263/DZXB.20190945

所属专题: 天线设计与仿真

• 学术论文 • 上一篇    下一篇

并行预处理有限元方法及其在系统级封装结构电磁模拟中的应用

王卫杰1, 胡少亮1, 郑宇腾1, 赵振国1, 周海京1,2   

  1. 1. 中物院高性能数值模拟软件中心, 北京 100088;
    2. 北京应用物理与计算数学研究所一室, 北京 100088
  • 收稿日期:2019-08-19 修回日期:2020-04-24 出版日期:2021-01-25
    • 作者简介:
    • 王卫杰 男,1987年11月出生于河南省开封市.现为中物院高性能数值模拟软件中心副研究员.主要研究方向为计算电磁学及多物理大规模并行算法.E-mail:wang_weijie@iapcm.ac.cn
    • 基金资助:
    • 国家自然科学基金 (No.12001053); 中物院创新发展基金 (No.CX2019034); 国防基础科学挑战计划 (No.TZ2018002)

A Parallel Preconditioned Finite Element Method and Its Applications in System-in-Package Electromagnetic Simulations

WANG Wei-jie1, HU Shao-liang1, ZHENG Yu-teng1, ZHAO Zhen-guo1, ZHOU Hai-jing1,2   

  1. 1. Software Center for High Performance Numerical Simulation, CAEP, Beijing 100088, China;
    2. The First Department, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2019-08-19 Revised:2020-04-24 Online:2021-01-25 Published:2021-01-25
    • Supported by:
    • National Natural Science Foundation of China (No.12001053); China Academy of Engineering Physics Innovation and Development Fund (No.CX2019034); The Defense Basic Science Challenge Program (No.TZ2018002)

摘要: 针对系统级封装结构的电磁兼容、信号完整性分析等应用,由于结构的复杂、多尺度和多材料的特性,其大规模电磁问题模拟一直难以实现.本文中,主要展示了基于并行支撑框架JAUMIN研发的高性能电磁计算程序JEMS-CDS及其在系统级封装结构电磁仿真中采用的高效算法.针对系统级封装结构电磁仿真,我们构建了两种预处理技术:区域分解方法与正定矩阵预处理方法.数值模拟结果显示JEMS-CDS程序在百CPU核并行规模上能够实现了近亿未知量的快速迭代求解.针对某天线阵列和射频系统级封装结构,利用JEMS-CDS程序在国产并行机上完成了电磁场并行数值模拟,获得了电磁场的高分辨率结果,支持了电磁兼容性分析、信号完整性分析等应用.

 

关键词: 有限元方法, 预处理, 并行计算, 系统级封装, 信号串扰

Abstract: In the electromagnetic compatibility analysis and signal integrity analysis, it is difficult to do full-wave electromagnetic simulation of system-in-package (SiP) due to its complex, multi-scale and multi-material characteristics. Here, we present a high-performance program JEMS-CDS developed on parallel infrastructure JAUMIN and its high-efficiency algorithms in SiP electromagnetic simulations. A positive definite matrix is constructed by analyzing the FEM matrix built for SiP simulation. Numerical results show that better convergence performance than traditional ones can be achieved, as well as a high parallel efficiency when scaling to hundreds of CPU cores with nearly one hundred millions unknowns. Finally, a practical product is simulated to acquire the high-resolution distribution of electromagnetic, supporting the analysis of electromagnetic compatibility and signal integrity.

 

Key words: finite element method, preconditioned method, parallel computing, system-in-package, cross talk

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