Dyadic Green’s Function For Electromagnetic Field In Layered Plane Medium And Its Numerical Operation

Integral equation method have gotten more and more applications in three dimensional electromagnetic field numerical simulation because of its high precision but with less computational work. The key problem of integral equation method is the Calculation of dyadic Green’s function, its generally used by Sommerfeld integral to express. However, the integral showing a certain highly oscillating and slow attenuation, its calculation would be very time-consumingThis article will research in representations of electromagnetic field dyadic Green’s function in planar stratified media and its numerical computational problems. The paper first give the basic theory of dyadic Green’s function for electromagnetic field.then starting from the Maxwell equations, using two-dimensional Hankel transform method to derive four kinds of expression formula of the dyadic Green’s function for electromagnetic field in layered plane medium. Then with Wavelets transform method research has constitute electric magnetic field and vector green function of Sommerfeld integral of fast numerical calculation, Because this method can improve the Sommerfeld integral of convergence nature, thus to accelerated has calculation. Last according to the electromagnetic field dyadic Green’s function in planar stratified media model-specific calculations, analysis the influence law of anisotropic parameters on electromagnetic field dyadic Green’s function in planar stratified media.