Effects of Medium Conductivity on Electromagnetic Pulse Propagation onto Dielectric Half Space: One-dimensional Simulation using Characteristic-based Method

Ho, Mingtsu; Lai, Fu-Shun

doi:10.1163/156939307781891085

Cited by 8 publications

(1 citation statement)

References 6 publications

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“…6, the PEC strip traveled at an extremely high velocity near 90% of the speed of light, while either advancing or retreating. Moreover, MOC was found to generate numerical results demonstrating reasonable trends in the EM problems due to the effects of the conductivity of a medium on the propagation of EM fields into a conducting dielectric halfspace (7) and the effects of a lossless nonuniform dielectric slab on the transmission of EM fields. (8) To overcome the grid distortion problems originating from a rotating cylinder, MOC was used with the passing center swing back grid (PCSBG) technique and the modified O-type grid system and to produce numerical results exhibiting reasonable trends for the EM fields scattered from rotating circular dielectric cylinders, where plane EM pulses with a Gaussian envelope were used as excitation sources.…”

Section: Introductionmentioning

confidence: 99%

Slice and Rearrange to Form Quarter-wavelength Plates: Numerical Simulation in One Dimension

Chang

Lee²,

et al. 2019

Sensors and Materials

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In this paper, the computational results of numerical simulations for newly proposed structures combining two quarter-wavelength (QW) slabs in one dimension are presented. The new QW plate is composed of alternate layers of two different QW slabs that are made of nonmagnetic dielectric materials A and B, characterized by the dielectric constants ε rA and ε rB , which satisfy the relation (ε rA) 2 = ε rB > 1, in order to minimize the reflection from the structures. Slabs A and B are, in theory, uniformly sliced into N + 1 and N pieces, respectively, or vice versa. They are then respectively rearranged into two different structures, A(BA) N and B(AB) N , which are numerically proved to function as QW plates. Compared with the traditional antireflection coating (ARC) techniques, the newly proposed structures have the advantages that every component of each type of material is identical in thickness and that they are easy to assemble. The idea of the proposed structures is numerically supported by simulation results obtained through the application of the method of characteristics (MOC). The wavelength of interest is set to 550 nm, which corresponds to green light. The numerical results, in both the time and frequency domains, demonstrate that the proposed structures function as antireflective glasses that can be straightforwardly fabricated and used to increase the energy efficiency and reduce the environmental impact of buildings as well as to enhance the performance of some wavelength-sensitive optical sensors. It can also be used as a new coating material for solar panels to single out the specific wavelength of light and hence to protect the solar panel from infrared and ultraviolet radiations.

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Section: Introductionmentioning

confidence: 99%

Slice and Rearrange to Form Quarter-wavelength Plates: Numerical Simulation in One Dimension

Chang

Lee²,

et al. 2019

Sensors and Materials

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show abstract

Slice and shuffle to form quarter wavelength plates: Numerical simulation in one dimension

Lee

2018

2018 IEEE International Conference on Applied System Invention (ICASI)

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Penetration of Em Fields into Circular Dielectric/Magnetic Container: Two-Dimensional Simulation

2011

Journal of Electromagnetic Waves and Applications

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In this paper, the propagation of EM Gaussian pulse through containers was numerically simulated using the method of characteristics (MOC) in two dimensions where the container has a circular cross-section, may be made of dielectric or magnetic material, and may hold dielectric or magnetic liquid. The MOC approach is used to directly approximate the time-domain Maxwell's equations in a modified O-type grid system. The electric fields sampled at the center of container were shown and compared in a side-by-side fashion. The effects on the electric fields of the following factors were examined: the thickness and material of the container and the liquid inside. The corresponding frequency domain information was obtained through the application of the Fourier transform and compared. To demonstrate the propagation of EM pulse in the modified O-type grid system, the electric field distributions over the whole computational domain for several cases were also presented.

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Effects of Medium Conductivity on Electromagnetic Pulse Propagation onto Dielectric Half Space: One-dimensional Simulation using Characteristic-based Method

Cited by 8 publications

References 6 publications

Slice and Rearrange to Form Quarter-wavelength Plates: Numerical Simulation in One Dimension

Slice and Rearrange to Form Quarter-wavelength Plates: Numerical Simulation in One Dimension

Slice and shuffle to form quarter wavelength plates: Numerical simulation in one dimension

Penetration of Em Fields into Circular Dielectric/Magnetic Container: Two-Dimensional Simulation

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