A High-Frequency Solution for Scattering by a Multilayer Anisotropic Slab

Balasubramanian, Manushanker; Campbell, Sawyer D.; Werner, Douglas H.

doi:10.1109/lawp.2021.3067198

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…The calculation expressions of the reflection coefficient [28] F and the diffraction coefficient [29] V of formula (9) are as follows, where the reflection coefficient F is divided into the horizontal polarization emission coefficient R ‖ and the vertical polarization reflection coefficient R ⊥ , the choice of which is determined by the antenna itself:

\begin{equation} \def\eqcellsep{&}\begin{array}{l} {R_\parallel } = \dfrac{{ - \varepsilon \cos \theta + \sqrt {\varepsilon - {{\sin }^2}\theta } }}{{\varepsilon \cos \theta + \sqrt {\varepsilon - {{\sin }^2}\theta } }}\\[19pt] {R_ \bot } = \dfrac{{\cos \theta - \sqrt {\varepsilon - {{\sin }^2}\theta } }}{{\cos \theta + \sqrt {\varepsilon - {{\sin }^2}\theta } }}\\[19pt] {R_R} = \dfrac{{ - 1}}{{\sqrt {2\pi K} }}\left[ {\dfrac{1}{{\pi - \beta + {\beta ^{\prime}}}} + \dfrac{1}{{\pi + \beta - {\beta ^{\prime}}}}} \right] \end{array} \end{equation}

…”

Section: Calculation Of 5g Channel Loss In Substation Based On Ray Tr...mentioning

confidence: 99%

“…The calculation expressions of the reflection coefficient [28] F and the diffraction coefficient [29] V of formula ( 9) are as follows, where the reflection coefficient F is divided into the horizontal polarization emission coefficient R ‖ and the vertical polarization reflection coefficient R ⊥ , the choice of which is determined by the antenna itself:…”

Section: Calculation Of 5g Channel Loss In Substationsmentioning

confidence: 99%

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Analysis of 5G channel loss and its influencing factors in substation based on ray tracing algorithm

Yifeng

Wang

Tang

et al. 2023

The Journal of Engineering

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5G (fifth generation) signals have small coverage and poor stability, and 5G channels are prone to loss in substations densely populated with metal equipment. Due to the particularity of the spatial layout in the substation, traditional physical or statistical channel models cannot accurately calculate the 5G channel loss in the substation. Therefore, this paper introduces the basic idea of ray tracing algorithm for studying ray propagation. Based on the geometric optics theory of ray propagation, the effective channel path of 5G signal in substation is found. Through the electromagnetic reflection theory and consistent diffraction theory, the energy loss caused by signal reflection and diffraction is calculated. Combined with the relationship between the free space loss of 5G signal on the transceiver path and the change of electric field, the solution method of 5G channel loss in substation is deduced. According to this method, (the influence of signal receiver height, 5G antenna height and its spatial position in horizontal and vertical directions on 5G channel loss of substation is studied in turn. By optimizing the layout of communication facilities according to the influence law, the reliability of 5G channel in substation can be realized).

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\begin{equation} \def\eqcellsep{&}\begin{array}{l} {R_\parallel } = \dfrac{{ - \varepsilon \cos \theta + \sqrt {\varepsilon - {{\sin }^2}\theta } }}{{\varepsilon \cos \theta + \sqrt {\varepsilon - {{\sin }^2}\theta } }}\\[19pt] {R_ \bot } = \dfrac{{\cos \theta - \sqrt {\varepsilon - {{\sin }^2}\theta } }}{{\cos \theta + \sqrt {\varepsilon - {{\sin }^2}\theta } }}\\[19pt] {R_R} = \dfrac{{ - 1}}{{\sqrt {2\pi K} }}\left[ {\dfrac{1}{{\pi - \beta + {\beta ^{\prime}}}} + \dfrac{1}{{\pi + \beta - {\beta ^{\prime}}}}} \right] \end{array} \end{equation}

…”

Section: Calculation Of 5g Channel Loss In Substation Based On Ray Tr...mentioning

confidence: 99%

“…The calculation expressions of the reflection coefficient [28] F and the diffraction coefficient [29] V of formula ( 9) are as follows, where the reflection coefficient F is divided into the horizontal polarization emission coefficient R ‖ and the vertical polarization reflection coefficient R ⊥ , the choice of which is determined by the antenna itself:…”

Section: Calculation Of 5g Channel Loss In Substationsmentioning

confidence: 99%

Analysis of 5G channel loss and its influencing factors in substation based on ray tracing algorithm

Yifeng

Wang

Tang

et al. 2023

The Journal of Engineering

View full text Add to dashboard Cite

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An Efficient Method for Analyzing Electromagnetic Scattering of Complex Targets Coated With Anisotropic Metal Composites

Cai,

Hua,

Gong

et al. 2024

Antennas Wirel. Propag. Lett.

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Research on the efficient EM modeling method from multilayered anisotropic medium-metal composite targets

Hua,

Rao,

et al. 2024

Opt. Express

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The paper presents a high-frequency modeling approach tailored for the electromagnetic (EM) scattering characteristics from electrically large radar targets coated with multi-layered anisotropic mediums (MLAMs). The approach begins by deriving the plane-wave spectrum expression for the incident EM field within MLAMs. It then employs spectral domain full-wave analysis method (SDFWAM) to obtain an analytical representation of the scattering field, further leveraging saddle point evaluation (SPE) to derive asymptotic solutions in the spatial domain. By integrating principles of physical optics (PO) and the tangent plane approximation, the far-field scattering characteristics of target enveloped in the specified medium are efficiently delineated. Validations against standard structure and the Misty satellite model reveal the method's pronounced alignment with the method of moments – finite element method (MoM-FEM) hybrid numerical algorithm, underscoring its notable computational efficiency. Furthermore, in conjunction with scattering sources decomposition technique, the approach is applied to optimize the radar cross-section (RCS) of the Su-57 aircraft, achieving precise and intelligent RCS control at minimal material cost. In conclusion, this research offers pivotal technological and theoretical foundations for EM scattering prediction, stealth design, and performance assessment in radar target domains.

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A High-Frequency Solution for Scattering by a Multilayer Anisotropic Slab

Cited by 3 publications

References 18 publications

Analysis of 5G channel loss and its influencing factors in substation based on ray tracing algorithm

Analysis of 5G channel loss and its influencing factors in substation based on ray tracing algorithm

An Efficient Method for Analyzing Electromagnetic Scattering of Complex Targets Coated With Anisotropic Metal Composites

Research on the efficient EM modeling method from multilayered anisotropic medium-metal composite targets

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