Surface impedance integral equations for quasistationary field analysis in axisymmetric systems.

摘要

Surface integral equations satisfied by the induced current density are formulated for axisymmetric solid conductors by applying the surface impedance model and the perfect conductor model. Their performance is investigated employing spheres and, also, prolate and oblate conducting spheroids with a large range of geometric parameters at different frequencies. Surface integral equations are also formulated using the modified surface impedance with first order curvature correction.; Integral equations are solved by applying a well known numerical technique, namely the method of moments. Different expansion functions and different weighting functions are employed to improve the accuracy. Numerical results generated are compared with available analytical results and with experimental data. The effects of employing different surface discretizations are presented. The range of validity of the surface impedance integral equations is also investigated.