A Simplified Calculation Of Transient
Plane Waves In A Presence Of An
Imperfectly Conducting Half-space
Author(s)
D. Poljak & S. Kresic
Abstract
Transient behaviour of plane waves in the presence of a two media configuration
is analysed in this work. The time domain formulation of the problem is based on
simplified reflection and transmission coefficient expressions arising from the
modified image theory. Knowing the impulse response of the finitely conducting
half-space the reflected and transmitted fields respectively, can be obtained by
using a convolution operator. Some illustrative numerical results for transient
earth-reflected waves are presented.
Keywords: Transient analysis, plane waves, reflection and transmission
coefficients, modified image theory, imperfectly conducting half-space.
1 Introduction
In many electromagnetic compatibility (EMC) applications it is important to
determine the transient behaviour of plane waves reflected from imperfectly
conducting earth [1] or transient waveform fields penetrating into a lossy
medium [2]. The analysis of electromagnetic waves behaviour in the presence of
lossy media can be modelled via the rigorous Sommerfeld integral approach [3],
[4] or via the approximate reflection and transmission coefficient approach [5],
[6] and can be carried out in the frequency or in the time domain, respectively.
One of the most cited papers dealing with a frequency domain analysis of
transient waves reflected from a lossy half-space is the work performed by
Dudley et al. [7].
Yet direct time domain modelling is a more demanding task in both analytical
and numerical sense, it certainly provides a deeper insight into the particular
Keywords
Transient analysis, plane waves, reflection and transmission
coefficients, modified image theory, imperfectly conducting half-space
Related Book
Other papers in this volume
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