SERIES SOLUTION OF THE ELECTROMAGNETIC FIELD EXCITED BY AN OFF-AXIS DIPOLE IN CIRCULARLY MULTILAYERED MEDIUM
多层环状导电媒质中离轴偶极子辐射场的级数解

When a dipole source (electric dipole or magnetic dipole) is located at arbitrary point in circularly multilayered conductive medium, the electromagnetic fields excited by the source contain both TE and TM waves. The series solutions of the fields in every layer are derived analytically in this paper. A coefficient recurrence matrix is established by means of the boundary conditions. In such way, the expressions of fields can be determined definitely. As a numerical example, a group of response curves of an off-axis source are given finally.