Calculation of Antenna Near Field Reactions on Low Conducting Materials using the Finite Element Method

摘要

A finite element formulation is given for calculating 3D electromagnetic scattering problems. Especially, the influence of a dipole excited field on low conducting materials situated very close to the antenna will be discussed. The back scattering from the conducting object to the antenna can be treated as well. Along the far boundaries of the computational domain, absorbing boundary conditions of second order have been prescribed in order to avoid unphysical reflections. The formulation described is assessed by applying it to a special problem and the solution obtained is compared with a boundary element calculation.