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IEEE Transactions on Antennas and Propagation
Volume 48 Number 10, October 2000

Table of Contents for this issue

Complete paper in PDF format

Wait's Complex-Image Principle Generalized to Arbitrary Sources

Ismo V. Lindell, Fellow, IEEE Jari J. Hänninen and Risto Pirjola

Page 1618.

Abstract:

The well-known simple and remarkably accurate approximate low-frequency (LF) complex-image method introduced in 1969 by J. R. Wait to compute the effect of the ground to the field of a divergenceless horizontal current (vertical magnetic current) is generalized to arbitrary current sources through the exact image formulation. The images of a vertical dipole, a horizontal current segment, and an oscillating point charge are first reduced to simplified but asymptotically exact forms and, subsequently, in terms of delta and step-functions to approximate image expressions that also include Wait's image. The novel part of the image is tested numerically through a geophysical example.

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