Integral Equations and the Moment Method
Constantine A. Balanis
Abstract
Constantine A. Balanis
Abstract
Integral equation (IE) technique casts the solution for the induced current in the form of an integral equation where the unknown induced current density is part of the integrand. Numerical techniques, such as the moment method, can then be used to solve for the current density. The objective of the IE method for scattering is to cast the solution for the unknown current density, which is induced on the surface of the scatterer, in the form of an integral equation where the unknown induced current density is part of the integrand. The chapter considers an integral equation approach to solve for the electric charge distribution, once the electric potential is specified. There are many forms of integral equations. Two of the most popular forms for time harmonic electromagnetics are the electric field integral equation and the magnetic field integral equation.
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Integral equation (IE) technique casts the solution for the induced current in the form of an integral equation where the unknown induced current density is part of the integrand. Numerical techniques, such as the moment method, can then be used to solve for the current density. The objective of the IE method for scattering is to cast the solution for the unknown current density, which is induced on the surface of the scatterer, in the form of an integral equation where the unknown induced current density is part of the integrand. The chapter considers an integral equation approach to solve for the electric charge distribution, once the electric potential is specified. There are many forms of integral equations. Two of the most popular forms for time harmonic electromagnetics are the electric field integral equation and the magnetic field integral equation.
Key concepts: Electric-field integral equation, Integral equation, Summation equation, Mathematics, Mathematical analysis, Method of moments (probability theory), Moment (physics), Integro-differential equation