Electromagnetic Wave Scattering By a Perfectly Conducting Wedge in Uniform Translational Motion

Cupis, P. De; Burghignoli, Paolo; Gerosa, Gino; Marziale, M. L.

doi:10.1163/156939302x01182

Cited by 24 publications

(10 citation statements)

References 6 publications

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“…To that end we substitute the Maxwell equations (2) in (13). For example, the first formula (2) is recast in the form B = −∂ −1 t ∂ r × E, consequently the first formula (13) becomes (16) defining the new dyadic differential-operatorW . In (16) ∂ −1 t denotes the primitive time-integration (indefinite integral).…”

Section: Spatiotemporal Differential-operatorsmentioning

confidence: 99%

Broadband Spatiotemporal Differential-Operator Representations for Velocity-Dependent Scattering

Censor

Gurion²

2006

PIER

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Abstract-A novel approach based on spatiotemporal differentialoperators is developed here for broadband, velocity-dependent scattering. Unlike the spectral-domain representations, the new method facilitates a compact formulation for scattering by arbitrary excitation signals, in the presence of moving objects. In free space (vacuum), relativistically exact formulas are developed.After developing the general theory, analysis of relativistically exact free-space scattering by cylinders, and a half-plane, are examined. For cylinders the analysis shows that in the far field pulses are located on circles in the co-moving reference-frame where the object is at-rest. In other reference frames this feature is valid only as an approximation. These results apply also to the diffractive part of the half-plane scattered field. The geometrical-optics contribution is associated with plane-waves and obeys the appropriate transformations. The various zones for these fields in an arbitrary reference-frame are analyzed.

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Section: Spatiotemporal Differential-operatorsmentioning

confidence: 99%

Broadband Spatiotemporal Differential-Operator Representations for Velocity-Dependent Scattering

Censor

Gurion²

2006

PIER

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“…There have been many studies investigating this issue. Some studies focus on the derivation of the theoretical solutions for the EM scattering by perfect conductors in uniform translational motion [1][2][3][4][5][6][7][8][9][10][11], some on the EM scattering by linearly vibrating objects [12][13][14], some on the simulation of the scattered EM fields from perfect planes moving and vibrating [15][16][17], and one on a moving dielectric half-space [18]. Among them, Harfoush et al provided computational results, in addition to the theoretical analysis, by using the finite-difference time-domain (FDTD) technique, in which both Faraday's and Ampere's laws were employed as aides to respectively approximate the magnetic and electric fields immediately next to the moving surface whenever the surface travels away from the grid point [3].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Scattered Em Fields From Rotating Cylinder Using Passing Center Swing Back Grids Technique in Two Dimensions

Ho¹

2009

PIER

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Abstract-In this paper, a new numerical technique, passing center swing back grids (PCSBG's) for the resolution of the grid distortion difficulty due to the rotational motion of objects is introduced. This proposed swing-back-grids approach alongside of the method of characteristics (MOC) is developed to solve EM scattering problems featured with rotating objects. The feasibility of such combination is apparent from the fact that MOC defines all field quantities in the centroid of the grid cell. The scattered EM fields from a rotating circular cylinder under the excitation of an EM pulse are predicted in two dimensions and the electric field distributions recorded at several time instances are demonstrated. In order to confirm that the cylinder is rotating and scattering EM fields simultaneously, the circular cylinder is uniformly divided into an even number of slices with one perfect reflector and one non-reflector alternatively since a rotating circular cylinder causes no relativistic effects.

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“…Many studies providing theoretical solutions and computational results for problems involved with moving or oscillating objects [1][2][3][4][5][6][7][8][9][10][11][12][13] or rotating objects [14,15] can be easily found. Harfoush et al adapted the finite-difference time-domain (FDTD) technique for simulating electromagnetic wave scattering from moving surfaces.…”

Section: Introductionmentioning

confidence: 99%

2-Dal Simulation of Em Fields Radiated by Rotating Cylinder Carrying Surface Currents Using Passing Center Swing Back Grids Technique

Ho¹

2009

PIER Letters

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Abstract-The passing center swing back grids (PCSBG) technique, in conjunction with the method of characteristics (MOC), was proposed to model electromagnetic problems featured with rotating objects. The drive of this proposal lays mainly on the fact that MOC defines all field components in the center of grid cell. Its practicability was validated by exhibiting the radiated EM fields from a rotating cylinder which carries surface currents with Gaussian profile and flowing in the axial direction. To clearly demonstrate that the cylinder is rotating and radiating EM fields simultaneously, the following arrangements were made. The cylinder may be equally sliced into an even number of segments that are with and without currents alternatively since a rotating circular cylinder yields no relativistic effects. The computational results showed that the radiated electromagnetic fields bear vortex structures as the cause of rotating cylinder, which serves as the evidences that PCSBG works properly.

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Electromagnetic Wave Scattering By a Perfectly Conducting Wedge in Uniform Translational Motion

Abstract: The exact relativistic

Cited by 24 publications

References 6 publications

Broadband Spatiotemporal Differential-Operator Representations for Velocity-Dependent Scattering

Broadband Spatiotemporal Differential-Operator Representations for Velocity-Dependent Scattering

Simulation of Scattered Em Fields From Rotating Cylinder Using Passing Center Swing Back Grids Technique in Two Dimensions

2-Dal Simulation of Em Fields Radiated by Rotating Cylinder Carrying Surface Currents Using Passing Center Swing Back Grids Technique

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