Plane Wave Scattering From Three Dimensional Multiple Objects Using the Iterative Multiregion Technique Based on the FDFD Method

Sharkawy, Mohamed H. Al; Demir, Veysel; Elsherbeni, Atef Z.

doi:10.1109/tap.2005.863129

Cited by 33 publications

(42 citation statements)

References 21 publications

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“…In these cases, iterative algorithms [19,20] or alternate techniques like the slice absorption method [21,22] are recommended.…”

Section: Three-dimensional Matrix Wave Equationmentioning

confidence: 99%

Simple Implementation of Arbitrarily Shaped Total-Field/Scattered-Field Regions in Finite-Difference Frequency-Domain

Rumpf¹

2012

PIER B

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Abstract-The total-field/scattered-field (TF/SF) formulation is a popular technique for incorporating sources into electromagnetic models like the finite-difference frequency-domain (FDFD) method. It is versatile and simplifies calculation of waves scattered from a device. In the context of FDFD, the TF/SF formulation involves modifying all of the finite-difference equations that contain field terms from both the TF and SF regions in order to make the terms compatible. While simple in concept, modifying all of the equations for arbitrarily shaped TF/SF regions is tedious and no solution has been offered in the literature to do it in a straightforward manner. This paper presents a simple and efficient technique for implementing the TF/SF formulation that allows the TF/SF regions to be any shape and of arbitrary complexity. Its simplicity and versatility are demonstrated by giving several practical examples including a diffraction grating, a waveguide problem, and a scattering problem with a cylindrical wave source.

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“…In these cases, iterative algorithms [19,20] or alternate techniques like the slice absorption method [21,22] are recommended.…”

Section: Three-dimensional Matrix Wave Equationmentioning

confidence: 99%

Simple Implementation of Arbitrarily Shaped Total-Field/Scattered-Field Regions in Finite-Difference Frequency-Domain

Rumpf¹

2012

PIER B

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“…The finite difference frequency domain is simple in formulation and most flexible in modeling arbitrarily shaped inhomogeneously filled and anisotropic scatterers [20][21][22].…”

Section: Problem Formulationmentioning

confidence: 99%

“…The outer boundary of the cell space is designed to absorb any energy incident upon it, by imposing the PML layers [23]. More details about the FDFD can be found in [20][21][22]. A general MATLAB code based upon the above analysis were developed by the authors.…”

Section: Problem Formulationmentioning

confidence: 99%

Breast Cancer Detection Using a Hybrid Finite Difference Frequency Domain and Particle Swarm Optimization Techniques

Zainud-Deen¹,

Hassen²,

Ali³

et al. 2008

PIER B

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Abstract-A hybrid technique based on Finite-difference frequency domain and particle swarm optimization techniques is proposed to reconstruct the breast cancer cell dimension and determines its position. Finite-difference frequency domain is formulated to calculate the scattered field after illuminating the breast by a microwave transmitter. Two-dimensional and three-dimensional models for the breast are used. The models include randomly distributed fatty breast tissue, glandular tissue, 2-mm thick skin, as well as chest wall tissue. The models are characterized by the dielectric properties of the normal breast tissue and malignant tissue at 800 MHz. Computer simulations have been performed by means of a numerical program; results show the capabilities of the proposed approach.

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“…Some scattering problems have created an enormous demand for modeling and simulation of cylinders with metamaterial layers [5][6][7][8][9][10][11][12]. The full wave iterative algorithm for the computation of the diffracted far field of the infinitely long cylinders that were coated with several dielectric layers is discussed in [5].…”

Section: Introductionmentioning

confidence: 99%

“…Various methods have been developed to treat diffraction problems such as the T -matrix approach [1,2], method of moments [5], Finitedifference time domain (FDTD) [10], Finite-difference frequency domain (FDFD) [4,11], integral method [9] and method of partial areas [3,7,8].…”

Section: Introductionmentioning

confidence: 99%

Microwave Scattering and Absorption by a Multilayered Lossy Metamaterial --- Glass Cylinder

Bucinskas¹,

Nickelson²,

Shugurovas³

2010

PIER

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Abstract-Here we present the rigorous electrodynamical solution of diffraction problem about the microwave scattering by a multilayered cylinder. The number and thickness of layers is not limited. We offer the solution when the central core of multilayered cylinder can be made of different isotropic materials as a metamaterial, a ceramic matter or a semiconductor as well as of a perfect metal. The isotropic coated layers can be of strongly lossy materials. The signs of the complex permittivity and complex permeability can be negative or positive in different combinations. Here we present dependencies of the scattered power of the incident perpendicularly and parallel polarized microwaves by the metamaterial-glass cylinder on signs of metamaterial permittivity as well as permeability. The glass layer absorbed power and metamaterial core absorbed power dependent on the hypothetic metamaterial permittivity and permeability signs at the wide range frequencies 1-120 GHz are also presented here. The metamaterial core of cylinder has a radius equal to 0.0018 m and the thickness of the coated acrylic-glass layer is 0.0002 m. We have found some conditions when the scattered-power has minimal values and the absorbed power by the coated acrylic glass layer is constant in a very wide frequency range. We have discovered that the glass layer absorbed power increases with increasing of the frequency at the range 1-120 GHz for both microwave polarizations.

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Plane Wave Scattering From Three Dimensional Multiple Objects Using the Iterative Multiregion Technique Based on the FDFD Method

Cited by 33 publications

References 21 publications

Simple Implementation of Arbitrarily Shaped Total-Field/Scattered-Field Regions in Finite-Difference Frequency-Domain

Simple Implementation of Arbitrarily Shaped Total-Field/Scattered-Field Regions in Finite-Difference Frequency-Domain

Breast Cancer Detection Using a Hybrid Finite Difference Frequency Domain and Particle Swarm Optimization Techniques

Microwave Scattering and Absorption by a Multilayered Lossy Metamaterial --- Glass Cylinder

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