A 3-D Stochastic FDTD Algorithm for Wave Propagation in Isotropic Cold Plasma Medium Based on Bilinear Transform

Fang, Yun; Liu, Jiangfan; Zihan, Jiao; Bai, Guang-Hui; Xi, Xiaoli

doi:10.1109/tps.2018.2878962

Cited by 13 publications

(4 citation statements)

References 14 publications

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“…Their numerical outcomes indicated a significant efficiency enhancement compared to the MC technique, thus proving that the proposed method can be a good alternative for EM ionospheric propagation studies. A variation of the S-FDTD technique for assessing uncertainties in cold plasma medium is examined in [8]. The suggested approach is based on the bilinear transform technique and has been successfully tested in 1D, 2D, and three-dimensional (3D) cases.…”

Section: Literature Review Of Related Workmentioning

confidence: 99%

A Stochastic Finite-Difference Time-Domain (FDTD) Method for Assessing Material and Geometric Uncertainties in Rectangular Objects

2020

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The uncertainties present in a variety of electromagnetic (EM) problems may have important effects on the output parameters of interest. Unfortunately, deterministic schemes are not applicable in such cases, as they only utilize the nominal value of each random variable. In this work, a two-dimensional (2D) finite-difference time-domain (FDTD) algorithm is presented, which is suitable for assessing randomness in the electrical properties, as well as in the dimensions of orthogonal objects. The proposed technique is based on the stochastic FDTD method and manages to extract the mean and the standard deviation of the involved field quantities in one realization. This approach is applied to three test cases, where uncertainty exists in the electrical and geometrical parameters of various materials. The numerical results demonstrate the validity of our scheme, as similar outcomes are extracted compared to the Monte Carlo (MC) algorithm.

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Section: Literature Review Of Related Workmentioning

confidence: 99%

A Stochastic Finite-Difference Time-Domain (FDTD) Method for Assessing Material and Geometric Uncertainties in Rectangular Objects

2020

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“…To analyze the scattering of electromagnetic waves in cold plasma-filled waveguides, different numerical techniques have been applied [25][26][27][28][29][30][31][32][33][34][35]. The mode-matching technique is often applicable in solving discontinuity problems in isotropic waveguides [36].…”

Section: Introductionmentioning

confidence: 99%

Cold plasma-induced effects on electromagnetic wave scattering in waveguides: a mode-matching analysis

Rizvi,

Afzal

2024

Commun. Theor. Phys.

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This article presents advancements in an analytical mode-matching technique for studying electromagnetic wave propagation in a parallel plate metallic rectangular waveguide. The technique involves projecting the solution onto basis functions and solving linear algebraic systems to determine scattering amplitudes. The accuracy of the method is validated through numerical assessments which involve the reconstruction of matching conditions and conservation laws. The study highlights the impact of geometric and material variations on reflection and transmission phenomena in the waveguide.

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“…The original PML formulation is a split-field scheme which shows limitations in absorption and resources [22]. Unsplit-field formulation is proposed to alleviate such conditions including convolutional PML (CPML), stretched coordinate PML (SC-PML) and complex-frequency-shifted PML (CFS-PML) schemes [23][24][25]. Although they hold advantages in reducing late-time reflections and absorbing low-frequency evanescent waves, reflection at the low frequency still needs to be enhanced [26].…”

Section: Introductionmentioning

confidence: 99%

Narrow-Bandpass One-Step Leapfrog Hybrid Implicit-Explicit Algorithm with Convolutional Boundary Condition for Its Applications in Sensors

Wang

Xie

Jiang

et al. 2022

Sensors

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A large number of sensors work in the narrow bandpass circumstance. Meanwhile, some of them hold fine details merely along one and two dimensions. In order to efficiently simulate these sensors and devices, the one-step leapfrog hybrid implicit-explicit (HIE) algorithm with the complex envelope (CE) method and absorbing boundary condition is proposed in the narrow bandpass circumstance. To be more precise, absorbing boundary condition is implemented by the higher order convolutional perfectly matched layer (CPML) formulation to further enhance the absorption during the entire simulation. Numerical examples and their experiments are carried out to further illustrate the effectiveness of the proposed algorithm. The results show considerable agreement with the experiment and theory resolution. The relationship between the time step and mesh size can break the Courant–Friedrichs–Levy condition which indicates the physical size/selection mesh size. Such a condition indicates that the proposed algorithm behaviors are considerably accurate due to the rational choice in discretized mesh. It also shows decrement in simulation duration and memory consumption compared with the other algorithms. In addition, absorption performance can be improved by employing the proposed higher order CPML algorithm during the whole simulation.

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A 3-D Stochastic FDTD Algorithm for Wave Propagation in Isotropic Cold Plasma Medium Based on Bilinear Transform

Cited by 13 publications

References 14 publications

A Stochastic Finite-Difference Time-Domain (FDTD) Method for Assessing Material and Geometric Uncertainties in Rectangular Objects

A Stochastic Finite-Difference Time-Domain (FDTD) Method for Assessing Material and Geometric Uncertainties in Rectangular Objects

Cold plasma-induced effects on electromagnetic wave scattering in waveguides: a mode-matching analysis

Narrow-Bandpass One-Step Leapfrog Hybrid Implicit-Explicit Algorithm with Convolutional Boundary Condition for Its Applications in Sensors

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