Abstract
Rigorous analysis for the electromagnetic fields scattered by a buried insulated loop in a homogeneous earth is presented. The loop is excited by a plane wave incident on the air-earth plane interface. The Fourier components of the circulating current in the loop are expressed in terms of internal and external impedances. The latter are given in integral forms that can be evaluated semi-analytically. It is shown that peaks of induced current in the loop occur at a set of frequencies which depend on the permittivity of the earth's medium. The scattered fields in the air are found to have both co-polar and cross-polar components of comparable magnitudes.
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