Author: Joongsoo LimPublisher:
ISBN:
Category : Electromagnetic waves
Languages : en
Pages : 182
Book Description
The Electromagnetic Scattering from Arbitrarily Shaped Bodies at Very Low Frequency Range Using Triangular Patch Modeling
Author: Joongsoo LimPublisher:
ISBN:
Category : Electromagnetic waves
Languages : en
Pages : 182
Book Description
Electromagnetic Scattering and Radiation of Arbitrarily-shaped Surfaces by Triangular Patch Modeling
Author: Sadasiva Madiraju RaoPublisher:
ISBN:
Category : Electromagnetic theory
Languages : en
Pages : 356
Book Description
Electromagnetic Scattering by Surface of Arbitrary Shape
Author: Donald R. WiltonPublisher:
ISBN:
Category :
Languages : en
Pages : 68
Book Description
The electric field integral equation (EFIE) is used with the moment to develop a simple and efficient numerical procedure for treating problems of scattering by arbitrarily-shaped objects. The objects are modeled for numerical purposes by planar triangular surface patch models. Because the EFIE formulation is used, the procedure is applicable to both open and closed bodies. Crucial to the formulation is development of a set of special subdomain basis functions defined on pairs of adjacent triangular patches. The basis functions yield a current representation which is free of line or point charges at subdomain boundaries. A second approach using the magnetic field integral equation (MFIE) and employing the same basis functions is also developed. Although the MFIE applies only to closed bodies, the moment matrix of the MFIE is also needed in dielectric scattering problems and in the so-called combined field integral equation used to eliminate difficulties with internal resonances present in the MFIE and EFIE formulations. The EFIE approach is applied to the scattering problems of plane wave illumination of a flat square plate, a bent square plate, a circular disk, and a sphere. Comparisons of surface current densities are made with previous computations or exact formulations and good agreement is obtained in each case. The MFIE approach is also applied to the sphere and reasonable agreement with exact calculations is obtained.
Electromagnetic Scattering and Radiation of Arbitrarily-shaped Surfaces by Triangular Patch Modeling
Author: Sadasiva M. RaoDissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 758
Book Description
Paired Pulse Basis Functions and Triangular Patch Modeling for the Method of Moments Calculation of Electromagnetic Scattering from Three-dimensional, Arbitrarily-shaped Bodies
Author: Scientific and Technical Aerospace Reports
Author: Radiation, Scattering, and Guidance of Electromagnetic Fields by Arbitrarily Shaped Structures Embedded in Layered Dielectric Media
Author: K. A. MichalskiPublisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
The study has been completed for an aperture-coupled microstrip patch antennas with uniaxial substrates. In particular, by a rigorous spectral domain approach-a circular microstrip antenna excited by a fundamental microstrip line mode is analyzed through a rectangular aperture in a ground plane. A more efficient, but approximate, reciprocity theorem based method, has also been implemented. Finally, a mixed, spectral and space domain approach has been developed to analyze an arbitrarily shaped microstrip patch antenna coupled to a microstrip transmission line through an arbitrarily shaped aperture. The space domain method is used to model the arbitrarily shaped patch and aperture, and the semiinfinite transmission line is modeled in spectral domain. To corroborate the validity of the analysis, we have built a circular patch test antenna coupled to the transmission line through a rectangular aperture and measured its input impedance over a broad frequency range.
Electromagnetic Scattering of Arbitrarily Shaped Inhomogeneous Cylinders Whose Cross-sections are Modeled by Triangular Patches
Author: Omar Mohamad Al-BundakPublisher:
ISBN:
Category : Dielectrics
Languages : en
Pages : 192
Book Description
Electromagnetic Scattering Analysis of Arbitrarily Shaped Material Cylinder by FEM-BEM Method
Author: M. D. DeshpandePublisher:
ISBN:
Category : Boundary element methods
Languages : en
Pages : 38
Book Description
A hybrid method that combines the finite element method (FEM) and the boundary element method (BEM) is developed to analyze electromagnetic scattering from arbitrarily shaped material cylinders. By this method, the material cylinder is first enclosed by a fictitious boundary. Maxwell's equations are then solved by FEM inside and by BEM outside the boundary. Electromagnetic scattering from several arbitrarily shaped material cylinders is computed and compared with results obtained by other numerical techniques.