Transient Analysis of a Finite Length Line Embedded in a Dielectric Half-Space using a Simplified Reflection/Transmission Coefficient Approach

The paper deals with a transient analysis of a finite length wire embedded in a dielectric half-space and illuminated by the electromagnetic pulse (EMP) using a simplified reflection coefficient approach. A direct time domain formulation is based on the wire antenna theory and on the corresponding Hallen integral equation for half-space problems. The presence of a dielectric half-space is taken into account via the simplified reflection/transmission coefficient arising from the modified image theory. The Hallen equation is solved via the time-domain Galerkin-Bubnov scheme of the Indirect Boundary Element Method (GB-IBEM) and some illustrative numerical results are presented. The transient response obtained using the simplified reflection/transmission coefficient approach is compared to the results obtained via the Fresnel coefficients approach.