Work

Near-to-far-field transformation scheme utilizing a modified sinc interpolation method for PSTD simulations

Year: 2024

Type: article

Abstract: We present a near-to-far-field (NTFF) transformation scheme tailored for pseudospectral time-domain (PSTD) simulations. Surface currents on the NTFF boundary are computed using a modified sinc interpolation method, eliminating the need for local averaging required infinite-difference time-domain (FDTD) simulations. Numerical results for dielectric sphere scattering, compared with Mie solutions, demonstrate that the proposed PSTD scheme achieves root-mean-square errors an order of magnitude lower than FDTD for the far-field patterns. The sinc interpolation method exhibits exceptional accuracy, even when applied to coarse grids.

Source: Optics Express

DOI: 10.1364/oe.546322

Authors: Jake W. Liu, Snow H. Tseng

Language: English

Topic: Electromagnetic Simulation and Numerical Methods

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: National Science and Technology Council

Award: Simulation Analysis of the Corneal Structure to Enhance Transparency of Biological Tissues