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基于FDTD的时域混合方法及其在天线前门耦合数值模拟中的应用

鲍献丰 陈晓洁 李瀚宇 刘昌 周海京

鲍献丰, 陈晓洁, 李瀚宇, 等. 基于FDTD的时域混合方法及其在天线前门耦合数值模拟中的应用[J]. 强激光与粒子束, 2021, 33: 123017. doi: 10.11884/HPLPB202133.210193
引用本文: 鲍献丰, 陈晓洁, 李瀚宇, 等. 基于FDTD的时域混合方法及其在天线前门耦合数值模拟中的应用[J]. 强激光与粒子束, 2021, 33: 123017. doi: 10.11884/HPLPB202133.210193
Bao Xianfeng, Chen Xiaojie, Li Hanyu, et al. FDTD-based time domain hybrid method and its application in numerical simulation of platform-antenna integrated coupling[J]. High Power Laser and Particle Beams, 2021, 33: 123017. doi: 10.11884/HPLPB202133.210193
Citation: Bao Xianfeng, Chen Xiaojie, Li Hanyu, et al. FDTD-based time domain hybrid method and its application in numerical simulation of platform-antenna integrated coupling[J]. High Power Laser and Particle Beams, 2021, 33: 123017. doi: 10.11884/HPLPB202133.210193

基于FDTD的时域混合方法及其在天线前门耦合数值模拟中的应用

doi: 10.11884/HPLPB202133.210193
基金项目: 国防基础科研计划项目(C1520110002);国家自然科学基金项目(61771061)
详细信息
    作者简介:

    鲍献丰,bobbao0925@163.com

  • 中图分类号: TN248.6

FDTD-based time domain hybrid method and its application in numerical simulation of platform-antenna integrated coupling

  • 摘要: 强电磁脉冲环境下的平台-机载天线一体化耦合计算属于典型多尺度时域电磁计算问题,采用传统的FDTD方法数值模拟时,由于精细结构的存在导致网格量巨大,计算效率低下。介绍了一种将非均匀FDTD方法与细导线FDTD方法以及多网格集总元件FDTD方法相结合的时域混合方法,能够有效降低计算开销,结合并行计算技术,快速计算得到天线端口上耦合产生的瞬态电压和电流响应,并将该方法成功应用于无人机平台-天线一体化前门耦合数值模拟中。
  • 图  1  细导线附近xOz面电磁场分量计算示意图

    Figure  1.  Schematic diagram for calculating electromagnetic field component of xOz surface

    图  2  集总元件真实路径定义及其网格离散示意

    Figure  2.  Route definition for lumped element and its grid discretization diagram

    图  3  平台-天线一体化前门耦合模型

    Figure  3.  Integrated platform-antenna coupling model

    图  4  刀片天线结构示意图

    Figure  4.  Structure diagram of blade antenna

    图  5  非均匀网格剖分示意图

    Figure  5.  Non uniform grid distribution

    图  6  时域电场分布

    Figure  6.  Time domain electric field distribution

    图  7  天线端口耦合电压波形

    Figure  7.  Coupled voltage waveforms at the antenna port

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出版历程
  • 收稿日期:  2021-05-21
  • 修回日期:  2021-10-21
  • 网络出版日期:  2021-10-29
  • 刊出日期:  2021-12-15

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