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   Articles with "fdtd" as a keyword



Recurrence scheme for FDTD-compatible discrete Green's function derived based on properties of Gauss hypergeometric function

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recommendations! Published in 2019 at "Journal of Electromagnetic Waves and Applications"

DOI: 10.1080/09205071.2019.1568308

Abstract: ABSTRACT In this paper, the formulation of one-dimensional FDTD (Finite-difference time-domain)-compatible discrete Green's function (DGF) is derived based on the Gauss hypergeometric function (GHF). The properties of GHF make it possible to derive the recurrence… read more here.

Keywords: compatible discrete; recurrence scheme; discrete green; fdtd ... See more keywords

Accurate and Numerically Stable FDTD Modeling of Human Skin Tissues in THz Band

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recommendations! Published in 2022 at "IEEE Access"

DOI: 10.1109/access.2022.3168160

Abstract: We propose finite-difference time-domain (FDTD) modeling suitable for healthy skin, basal cell carcinoma, dysplastic pigmentary nevus, and non-dysplastic pigmentary nevus in the frequency range of 0.25 THz to 1.05 THz. Toward this purpose, we utilize… read more here.

Keywords: numerically stable; accurate numerically; skin; fdtd modeling ... See more keywords

Leakage-Free Leapfrog ADI-FDTD Method for Lossy Media

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recommendations! Published in 2024 at "IEEE Antennas and Wireless Propagation Letters"

DOI: 10.1109/lawp.2023.3337350

Abstract: The leapfrog alternating direction implicit finite-difference time-domain (ADI-FDTD) method, as an effective implementation of ADI-FDTD, has garnered widespread attention and extension. However, it has been found that the commonly used leapfrog ADI-FDTD method for lossy… read more here.

Keywords: fdtd; adi fdtd; lossy media; fdtd method ... See more keywords

FDTD Medium Dimension Selection Guidelines for GPR Synthetic Data Generation

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recommendations! Published in 2025 at "IEEE Geoscience and Remote Sensing Letters"

DOI: 10.1109/lgrs.2024.3510683

Abstract: Ground-penetrating radar (GPR) has been traditionally used for subsurface assessment. In many applications, such as precision agriculture via drone-borne radar, it is critical to use machine learning (ML) techniques to map GPR received signals into… read more here.

Keywords: medium dimensions; fdtd; synthetic data; soil ... See more keywords

Unified Leapfrog CDI-FDTD Methods With Weakly Conditional Stability and Hybrid Implicit-Explicit Schemes

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recommendations! Published in 2024 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2024.3426629

Abstract: Recently proposed leapfrog complying-divergence implicit-finite-difference time-domain (CDI-FDTD) method features many advantages over other unconditionally stable FDTD methods, such as unconditional stability, complying-divergence, and efficient leapfrog scheme with reduced right-hand-side (RHS) flops. This article investigates leapfrog… read more here.

Keywords: leapfrog cdi; fdtd; stability; cdi fdtd ... See more keywords

A Numerical Study of Efficient Leapfrog CD-HIE-FDTD Method With CFS-PML Technique

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recommendations! Published in 2025 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2025.3574871

Abstract: The recently proposed complying-divergence implicit finite-difference time-domain (CDI-FDTD) method was demonstrated with relatively superior numerical performance, especially with the unconditional stability of implicit methods and the complying-divergence property. In addition, the complying-divergence property was also… read more here.

Keywords: complying divergence; fdtd method; cfs pml; fdtd ... See more keywords

An 3-D Unconditionally Stable CDI-FDTD Method Based on the Conformal Technique for Simulating Complex Curved PEC Objects

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recommendations! Published in 2025 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2025.3602126

Abstract: The conventional Yee grid modeling approach employed within the unconditionally stable complying-divergence implicit finite-difference time-domain (CDI-FDTD) technique commonly encounters substantial staircasing errors when simulating objects with curved perfect electric conductor (PEC) structures. In response to… read more here.

Keywords: technique; cdi fdtd; fdtd method; fdtd ... See more keywords

3-D FDTD Framework for Simulating SAR Imagery of Realistic Near Earth Surface Volumes (Soil, Snow, and Vegetation)

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recommendations! Published in 2024 at "IEEE Transactions on Geoscience and Remote Sensing"

DOI: 10.1109/tgrs.2024.3391790

Abstract: Synthetic aperture radar (SAR) imaging of near Earth surface natural material volumes (soil, snow, and vegetation) and man-made objects corresponds to an equivalent real-aperture scenario with temporally short and spatially focused pulses. This equivalence holds… read more here.

Keywords: volumes soil; earth surface; fdtd; near earth ... See more keywords

Toward the Modeling of Thin Conductive Layer With Hybrid FDTD-PITD Method

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recommendations! Published in 2024 at "IEEE Transactions on Magnetics"

DOI: 10.1109/tmag.2024.3470531

Abstract: Thin conductive layers (TCLs), as typical multiscale problems, pose challenges to any single numerical algorithm. Therefore, a novel hybrid method is proposed to model the embedded TCL, which is a synergistic combination of the finite-difference… read more here.

Keywords: method; fdtd; thin conductive; toward modeling ... See more keywords

A Hybrid Crank–Nicolson FDTD Subgridding Boundary Condition for Lossy Thin-Layer Modeling

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recommendations! Published in 2017 at "IEEE Transactions on Microwave Theory and Techniques"

DOI: 10.1109/tmtt.2016.2637348

Abstract: The inclusion of thin lossy material layers, such as carbon-based composites, is essential for many practical applications for modeling the propagation of electromagnetic energy through composite structures such as those found in vehicles and electronic… read more here.

Keywords: boundary condition; time; fdtd; crank nicolson ... See more keywords

Experimental and FDTD study of silicon surface morphology induced by femtosecond laser irradiation at a high substrate temperature.

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recommendations! Published in 2017 at "Optics express"

DOI: 10.1364/oe.25.007818

Abstract: Substrate temperature is an important parameter for controlling the properties of femtosecond laser induced surface structures besides traditional ways. The morphology on silicon surface at different temperatures are studied experimentally. Compared to those formed at… read more here.

Keywords: temperature; surface; substrate temperature; silicon surface ... See more keywords