S. Yuferev et L. Kettunen, Implementation of high order surface impedance boundary conditions using vector approximating functions, IEEE MAGNET, 36(4), 2000, pp. 1606-1609
In this paper a technique to couple high order surface impedance boundary c
onditions (SIBC's) with the vector boundary and finite element formulations
is proposed for both low- and high-frequency problems. The use of high ord
er SIBC's enables to improve the accuracy of the computations and take into
account the effects related to the curvature of the conductor surface. It
is shown that the implementation of the Mitzner SIBC does not lead to nem n
umerical difficulties compared to classical Leontovich SIBC's, A numerical
example is included to illustrate the theory.