A Time Domain Incremental Theory of Diffraction: Scattering of Electromagnetic Pulsed Plane Waves

Attiya, Ahmed M.; El-Diwany, E.; Shaarawi, Amr M.; Besieris, Ioannis M.

doi:10.2528/pier03032001

Cited by 11 publications

(19 citation statements)

References 22 publications

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“…In Ref. [25], a time-domain incremental theory of diffraction (TD-ITD) was formulated and applied to the scattering of pulsed plane waves from a circular disk. In this section, that analysis will be extended to the scattering of a first order TE X-wave from a circular perfectly conducting disk.…”

Section: Scattering Of Te X-waves From a Perfectly Conducting Circulamentioning

confidence: 99%

Scattering of X-Waves from a Circular Disk Using a Time Domain Incremental Theory of Diffraction

Attiya¹,

El-Diwany²,

Shaarawi³

et al. 2004

PIER

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The diffraction and scattering of a first-order ultrawideband TE X-wave by a perfectly conducting circular disk is investigated using an augmented time-domain incremental theory of diffraction. The analysis relies on a pulsed plane wave representation of the incident X-wave. The diffraction and scattering of each constituent pulsed plane wave component is calculated at the observation point. A subsequent azimuthal angular superposition yields the diffracted and scattered field due to the incident X-wave pulse. Making use of the localization and symmetry properties of the incident TE X-wave, a novel four-sensor correlated detection scheme is introduced which is particularly effective in detecting the edges of the scattering disk and has an exceptional resolving power.

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Section: Scattering Of Te X-waves From a Perfectly Conducting Circulamentioning

confidence: 99%

Scattering of X-Waves from a Circular Disk Using a Time Domain Incremental Theory of Diffraction

Attiya¹,

El-Diwany²,

Shaarawi³

et al. 2004

PIER

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“…Therefore, more accurate and general field prediction models are frequently sought. Towards this direction, ray tracing techniques [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] have been extensively employed, being the state-of-the-art, especially in indoor propagation modeling. Such methods are usually based on simplified models of electromagnetic wave reflection, refraction and diffraction (such as physical optics, geometric optics or geometric theory of diffraction approximations) and, as expected, they require a large number of rays to capture the physics of the problem.…”

Section: Introductionmentioning

confidence: 99%

Experimental Validation of a Hybrid Wide-Angle Parabolic Equation - Integral Equation Technique for Modeling Wave Propagation in Indoor Wireless Communications

Theofilogiannakos¹,

Yioultsis²,

Xenos³

2008

PIER

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Abstract-A new full-wave Parabolic -Integral Equation Method(PE-IEM) for the simulation of wave propagation in realistic, highly complex indoor communication environments is proposed, together with an extensive validation via measurements. The method is based on a wide-angle parabolic equation, further enhanced by an integral equation correction and is capable of providing good approximations of the electromagnetic fields and the received power, incorporating all fundamental propagation mechanisms in a single simulation. For a rigorous validation, it has been applied in a complex twelve-room office space and compared with measurements at the two different frequencies of 1 GHz and 2.5 GHz. The accuracy of the approximation is within reasonably expected margins, while the method retains all the advantages of full wave methods and it also has moderate requirements of computational resources.

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“…The formulation of a plane wave propagation in an unbounded isotropic homogeneous medium using (10) has been rigorously derived in [21] and is employed in this section to demonstrate the utilization of the concepts developed in this paper. According to [21], the plane wave propagating fromr 1 tor 2 can be expressed as (18) where…”

Section: Demonstrating Examplesmentioning

confidence: 99%

“…Due to the needs of TD solutions, many efforts have been applied [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Typical TD approaches include using fast Fourier transform (FFT) or analytical time transform (ATT) [16,17] to directly inverse FD solutions into TD, finite difference time domain (FDTD) [18], TD integral approaches [19] and TD uniform geometrical theory of diffractions (TD-UTD) [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

A Discrete Time Electromagnetic Formulization and Its Applications

Tuan¹,

Chou²

2008

PIER

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Abstract-This paper presents a formulization of time domain (TD) discrete electromagnetic (EM) solution to provide an effective analysis over a variety of EM problems. This procedure first represents the time responses of EM fields in terms of a set of selected basis functions. Their coefficients are then employed to create matrix-form Maxwell's equations with forms analogous to frequency domain (FD) Maxwell's equations, which allows one to formulate TD solutions via utilizing their corresponding FD solutions that are existing and generally much mature. This work provides general characteristics with parts previously described in the discrete-time EM theory [20,21] and, most importantly, provides rigorous theoretical derivations in formulating the TD solutions.

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A Time Domain Incremental Theory of Diffraction: Scattering of Electromagnetic Pulsed Plane Waves

Cited by 11 publications

References 22 publications

Scattering of X-Waves from a Circular Disk Using a Time Domain Incremental Theory of Diffraction

Scattering of X-Waves from a Circular Disk Using a Time Domain Incremental Theory of Diffraction

Experimental Validation of a Hybrid Wide-Angle Parabolic Equation - Integral Equation Technique for Modeling Wave Propagation in Indoor Wireless Communications

A Discrete Time Electromagnetic Formulization and Its Applications

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