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A numerical analysis of the performance of the spherical perfectly matched layer (PML) applied to the finite-difference time-domain (FDTD) algorithm implemented in spherical staggered grids is presented in this communication.… Click to show full abstract
A numerical analysis of the performance of the spherical perfectly matched layer (PML) applied to the finite-difference time-domain (FDTD) algorithm implemented in spherical staggered grids is presented in this communication. The spherical PML is derived through a complex transformation (analytical continuation) of the radial coordinate. We evaluate the performance of the spherical PML by simulating fields produced by electric dipoles within the spherical FDTD terminated by a spherical PML and computing the reflection error. The influence of several PML parameters on the reflection error is examined.
Journal Title: IEEE Transactions on Antennas and Propagation
Year Published: 2018
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