Asymptotic and hybrid techniques for electromagnetic scattering

Bouche, Daniel; Molinet, F.; Mittra, R.

doi:10.1109/5.248956

Cited by 70 publications

(23 citation statements)

References 78 publications

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“…The review of these hybrid techniques can been found in [3][4][5]. Although these hybrid techniques can deal with many scattering and radiating from complex objects, they cannot solve the problem of electrically large complex objects with a high degree of accuracy.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Scattering from Perfectly Conducting Plates by the Use of AMMM

Sarkar

1999

PIER

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Section: Introductionmentioning

confidence: 99%

Analysis of Scattering from Perfectly Conducting Plates by the Use of AMMM

Sarkar

1999

PIER

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“…However, it is still very difficult nowadays to analyze radiation from on-board antennas by MoM alone when the electrical sizes of the platforms become larger and larger (e.g., thousands of wavelengths) as the operating frequency increases. With this background, parallel hybrid techniques that combine MoM with high-frequency techniques, either ray-based or current-based [13], have a potential to address this class of problem. MoM hybrid with current-based high-frequency asymptotic methods, such as the Physical Optics (PO) [14][15][16][17], is a preferable choice since MoM is based on currents as well.…”

Section: Introductionmentioning

confidence: 99%

Parallel Mom-Po Method With Out-of-Core Technique for Analysis of Complex Arrays on Electrically Large Platforms

Zhao¹,

Zhang²,

García-Doñoro³

et al. 2010

PIER

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Abstract-A Message Passing Interface (MPI) parallel implementation of a hybrid solver that combines the Method of Moments (MoM) with higher order basis functions and Physical Optics (PO) has been successfully used to solve a challenging problem including a 2160-slot waveguide array on an airplane with a maximum dimension larger than 1000 wavelengths. The block-partitioned scheme for the large dense MoM matrix combined with the process-cyclic scheme for the PO discretized triangles is designed to achieve excellent load balance and high parallel efficiency. To break the limitation of physical memory, the parallel out-of-core technique is introduced to tackle large dense systems generated using the MoM formulation. This research provides a solution with reasonable accuracy for solving large on-board antenna problems but has very low memory usage.

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“…These methods can be divided into various categories. First category is based on the Physical Optics (PO) [8] approximation which is an approximate technique and is accurate for predicting the far-field pattern near the main beam. The second category which is more accurate than PO technique is based on the Physical Theory of Diffraction (PTD) [9], which takes care of the singularity at the edges.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo Integration Technique for the Analysis of Electromagnetic Scattering From Conducting Surfaces

Mishra¹,

Gupta²

2008

PIER

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Abstract-A new numerical method is proposed for the analysis of electromagnetic scattering from conducting surfaces. The method involves Monte Carlo integration technique in the Method of Moments solution of the Electric Field Integral Equation for determining the unknown induced current distribution on the surface of the scatterers. The unknown current distribution is represented in terms of a modified entire domain polynomial basis functions satisfying the appropriate edge conditions and symmetry conditions of the problem. This leads to very small order of the Method of Moments matrix as compared to the conventional sub-domain basis functions. The accuracy and the effectiveness of the method are demonstrated in three cases of scattering from conducting circular disks and results are compared with the solutions using conventional sub-domain basis functions. While the sub domain analysis is incapable of handling large domain problems, the proposed method overcomes this limitation. It is also observed that the proposed method is superior to conventional sub-domain method in dealing with singularity problem of the integral equation easily and efficiently.

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Asymptotic and hybrid techniques for electromagnetic scattering

Cited by 70 publications

References 78 publications

Analysis of Scattering from Perfectly Conducting Plates by the Use of AMMM

Analysis of Scattering from Perfectly Conducting Plates by the Use of AMMM

Parallel Mom-Po Method With Out-of-Core Technique for Analysis of Complex Arrays on Electrically Large Platforms

Monte Carlo Integration Technique for the Analysis of Electromagnetic Scattering From Conducting Surfaces

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