论文部分内容阅读
介绍了三维FDTD建模软件的开发,电磁建模和网格生成采用Visual Basic实现。该软件提供给FDTD仿真软件诸如介质、网格、边界条件、激励源设置之类的数据文件;自动生成满足FDTD算法条件的均匀或非均匀网格。采用OpenGL技术,通过对图形的旋转、平移、缩放、透视等操作对目标物体进行细致的实时观察与修改,实现了计算区间内电磁场的动态变化演示,具有建模速度快、可视化效果好等优点,保证了FDTD数值求解过程的正确与高效。最后利用该软件对微带拐角等不连续性问题进行了建模和仿真,取得了较好的效果。
The development of 3D FDTD modeling software is introduced. Electromagnetic modeling and grid generation are implemented by using Visual Basic. The software is supplied to FDTD simulation software such as media files, grids, boundary conditions, excitation source settings and the like; automatically generate uniform or non-uniform grids that satisfy the FDTD algorithm conditions. By using OpenGL technology, we can observe and modify the target object in detail by rotating, panning, zooming, and pivoting the graph to realize the dynamic change of the electromagnetic field in the calculation interval. It has the advantages of fast modeling speed and good visual effect , To ensure that the FDTD numerical solution process is correct and efficient. Finally, the software was used to model and simulate the discontinuity such as microstrip corner and achieved good results.