GB-IBEM model of vertical antenna above, below and penetrating ground

This paper deals with an assessment of current distribution along vertical antenna penetrating the ground. The model is based on the integro-differential equation of Pocklinghton type together with rigorous Sommerfeld representation of the fields due to an interface. The corresponding integral equation is treated with the Galerkin-Bubnov variant of Indirect Boundary Element Method. The antenna is excited by the voltage source, as well as by the equivalent current source, which is incorporated into the model as a boundary condition.