Elimination of infinities in equivalent edge currents, Part II: Physical optics components

Michaeli, A.

doi:10.1109/tap.1986.1143941

Cited by 50 publications

(27 citation statements)

References 8 publications

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“…These can then be incorporated into various versions of the high-frequency diffraction theory, including the geometrical theory of diffraction (GTD, [11]) and its uniform formulations -the uniform asymptotic theory of diffraction (UAT, [12][13][14]), and the uniform geometrical theory of diffraction (UTD, [15]). Accurate solutions to the canonical problems are also used in applied versions of the high-frequency diffraction theory, aimed at solving engineering problems, like the physical theory of diffraction (PTD, [16]) and other techniques utilising the concepts of incremental length diffraction coefficients [17][18][19], equivalent edge currents [20][21][22][23], and elementary edge waves [24,25].…”

Section: Introductionmentioning

confidence: 99%

Far-field analysis of the Malyuzhinets solution for plane and surface waves diffraction by an impedance wedge

Norris

Osipov

1999

Wave Motion

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Section: Introductionmentioning

confidence: 99%

Far-field analysis of the Malyuzhinets solution for plane and surface waves diffraction by an impedance wedge

Norris

Osipov

1999

Wave Motion

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“…To improve the PO solution and take into account the diffraction by edges, the Method of Equivalent Currents (MEC) has been proposed by Michaeli [5,20,21]. The MEC describes the source of the field in terms of fictitious equivalent electric and magnetic currents along the edge.…”

Section: Methods Of Equivalent Currentsmentioning

confidence: 99%

Po/Mec-Based Scattering Model for Complex Objects on a Sea Surface

Baussard¹,

Rochdi²,

Khenchaf³

2011

PIER

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Abstract-In this contribution a model based on asymptotic methods is proposed to compute the scattered field from complex objects on a sea surface. The scattering model combines the geometrical optics, the physical optics and the method of equivalent currents. It includes the shadowing effects and multiple-bounce up to order 3. This model is used, in the following, for Radar Cross Section (RCS) estimation and to generate Synthetic Aperture Radar (SAR) raw data for imaging applications. The theoretical aspects are reviewed in this paper and the proposed model is detailed. Numerical results are provided to validate the approach through the computation of RCS for canonical objects and complex scenes. Both the bistatic and the monostatic configurations are studied in this work. Finally some first results dealing with SAR imaging of objects on a sea surface are provided. These images are constructed from the simulated raw data thanks to a chirp scaling-based algorithm.

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“…The third modified PTD that will be studied in this paper is Michaeli's work. He derived the GTD equivalent edge currents by asymptotically reducing the surface to edge integral [17]. These currents were then written in terms of diffraction coefficients.…”

Section: Theorymentioning

confidence: 99%

Analysis and Design of a Gaussian Backscatter Antenna With Ring Focus Feed

Thaiwirot¹,

Wongsan²,

Krairiksh³

2010

PIER C

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Abstract-This paper presents analysis and design of a Gaussian backscatter antenna with ring focus feed. The curvature of main reflector is Gaussian, and the subreflector is a portion of an ellipse. The antenna has axial symmetry. A backscattering technique is used with the main reflector to achieve wide beamwidth. The input parameters of the proposed antenna are derived in closed form. Physical theory of diffraction (PTD) is used to analyze the radiation pattern of the proposed antenna and verified with experimental results. The effects of the support structures on the radiation patterns of the proposed antenna have been investigated experimentally. The proposed antenna can produces high gain and wide beamwidth (coverage angle θ = ±65 • ). This antenna can be used for realizing earth coverage beam in LEO satellite or indoor wireless LAN applications.

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Elimination of infinities in equivalent edge currents, Part II: Physical optics components

Cited by 50 publications

References 8 publications

Far-field analysis of the Malyuzhinets solution for plane and surface waves diffraction by an impedance wedge

Far-field analysis of the Malyuzhinets solution for plane and surface waves diffraction by an impedance wedge

Po/Mec-Based Scattering Model for Complex Objects on a Sea Surface

Analysis and Design of a Gaussian Backscatter Antenna With Ring Focus Feed

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