The impact of metallic scatterers on the performance of a class of shielded structures

Lopez-Pena, S.; Mattes, Michael; Mosig, Juan R.

doi:10.1049/ic.2007.1415

Cited by 4 publications

(2 citation statements)

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“…First, and are meshed with triangles that have inner edges and tetrahedra that have triangular faces, in each tetrahedron is assumed constant, Rao-Wilton-Glisson (RWG) [37] functions and Schaubert-Wilton-Glisson (SWG) [38] functions are defined, and the unknown current densities are expanded as (12) where the basis functions are if if (13) In (13), is the complex contrast ratio [36] and denotes the (piecewise constant) permittivity in the support of . Next, (12) is substituted in (2), the S-EFIE is tested with the functions , and the V-EFIE is tested with the functions , where if if (14) This yields the linear system of equations (15) The entries of the unknown coefficient sub-vector , the tested incident field sub-vector , and the impedance sub-matrix are (16) for , , and . The entries of the Gram matrix are (17) for .…”

Section: Mommentioning

confidence: 99%

An FFT-Accelerated Integral-Equation Solver for Analyzing Scattering in Rectangular Cavities

Yang

Yılmaz

2014

IEEE Trans. Microwave Theory Techn.

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An efficient integral-equation method is presented for the fast analysis of scattering from arbitrarily shaped 3-D structures in a rectangular cavity. The proposed method employs: 1) the frequency-domain surface-volume electric field integral equation to model scattering from conductors and dielectrics; 2) the rectangular-cavity Green functions to account for the cavity walls; 3) the Ewald method and 3-D spatial interpolation to accelerate the Green function computations; and 4) the adaptive integral method (AIM) to reduce the computational complexity of the iterative method-of-moments solution procedure. The structure of interest is first meshed with arbitrary triangular/tetrahedral elements. The mesh is then enclosed with an auxiliary regular grid. Next, a four-step algorithm is executed: anterpolation (mesh-to-grid), propagation (grid-to-grid), interpolation (grid-to-mesh), and correction (mesh-to-mesh). The computationally dominant propagation step of the AIM is accelerated by decomposing the Green functions into eight components that are in convolution or correlation form in the three Cartesian directions. This results in eight types of propagation matrices; these are in nested Toeplitz or Hankel form and are efficiently multiplied with the necessary vectors using 3-D fast Fourier transforms. Numerical results validate the method, quantify its costs, and demonstrate its utility. Index Terms-Cavity Green functions, fast Fourier transform (FFT), integral equations. 0018-9480

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Section: Mommentioning

confidence: 99%

An FFT-Accelerated Integral-Equation Solver for Analyzing Scattering in Rectangular Cavities

Yang

Yılmaz

2014

IEEE Trans. Microwave Theory Techn.

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“…The equation above can be referred to the asymptotic value of the mentioned summation [31], or in terms of Hankel functions expressions [32].…”

Section: Parallel Plate Green´s Functionmentioning

confidence: 99%

Contribution to the analysis and design of transmitarray lenses = Contribución al análisis de lentes tipo transmitarray

Torre¹

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Hay quien se pasa la vida entera leyendo sin conseguir nunca ir más allá de la lectura, se quedan pegados a la página, no entienden que las palabras son sólo piedras puestas atravesando la corriente de un río, si están allí es para que podamos llegar a la otra margen, la otra margen es lo que importa Es una estupidez perder el presente sólo por el miedo de no llegar a ganar el futuro José Saramago, La caverna Nunca olvides de dónde vienes...

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Analytical Evaluation of the Quadruple Static Potential Integrals on Rectangular Domains to Solve 3-D Electromagnetic Problems

Lopez-Pena

Mosig

2009

IEEE Trans. Magn.

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The impact of metallic scatterers on the performance of a class of shielded structures

Cited by 4 publications

References 0 publications

An FFT-Accelerated Integral-Equation Solver for Analyzing Scattering in Rectangular Cavities

An FFT-Accelerated Integral-Equation Solver for Analyzing Scattering in Rectangular Cavities

Contribution to the analysis and design of transmitarray lenses = Contribución al análisis de lentes tipo transmitarray

Analytical Evaluation of the Quadruple Static Potential Integrals on Rectangular Domains to Solve 3-D Electromagnetic Problems

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