Analysis of axially symmetrical coaxial discontinuity structures by using two-dimensional nonuniform finite-difference frequency domain method

作者：Huang Ruifeng; Zhang Daming^*; Li Lin

来源：IEEE Transactions on Magnetics, 2008, 44(6): 1170-1173.

DOI：10.1109/TMAG.2008.916541

• coaxial discontinuity structure
• finite-difference frequency domain (FDFD) method
• finite-difference time domain (FDTD) method
• mode matching method
• S parameters

By combining the main features of the 2-D finite-difference time domain (FDTD) method and the traditional finite-difference frequency domain (FDFD) method, a 2-D FDFD method with nonuniform grids and perfectly matched layers (PML) is presented in this paper to analyze axially symmetrical coaxial discontinuity structures. Numerical results show that the 2-D FDFD method is much more efficient than the commonly used 2-D FDTD method in solving the frequency response of the structures. High accuracy of the 2-D FDFD method is shown in a simple numerical example which can be solved by using the mode matching method.

• 出版日期2008-6
• 单位华北电力大学; 南阳理工学院