Scattering by a PEMC cylinder embedded in lossy medium

Ahmed, Saeed; Rehman, Atta Ur; Iftikhar, Mariam; Lisa, Mona

doi:10.1016/j.ijleo.2016.05.153

Cited by 2 publications

(2 citation statements)

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“…We extend the problem reported by [3] for the lossy background medium. Several canonical objects in lossy media has been investigated over the years by many authors [44][45][46][47][48][49][50][51][52][53][54][55][56] by applying approximate values of electric conductivity and dielectric constants of various materials. The concept of subsurface scattering of EM waves for detecting the cavities and targets buried in soil has important applications in the areas of nonproliferation of weapons, environmental monitoring, hazardous-waste site location and assessment, and even archeology.…”

Section: Introductionmentioning

confidence: 99%

“…This leads to a concept of an optimum frequency and bandwidth for imaging in a particular soil. The radar cross section of several canonical objects in lossy media is derived, and examples are given for several objects like scattering of buried PEC sphere, PEC cylinder, and PEC plate [44] and similarly scattering by PEMC plate [54], PEMC strip [55] and PEMC cylinder [56]. Furthermore, we can study the diffraction by PEC and PEMC half plane [39] and step is also made by semiinfinite half planes with a step height a, so they can also be investigated for diffraction by using the electric parameters of soils.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic Line Source Diffraction by a PEMC Step in Lossy Medium

Ahmed¹,

Lisa²

2018

Antennas and Wave Propagation

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In this chapter, we investigate a magnetic line source diffraction problem concerned with a step. To study the diffraction problem in lossy medium, we follow the Wiener-Hopf technique and steepest decent method to solve it for impedance step. By equating the impedances of the step to zero, the solution reduces for magnetic line source diffraction by PEC step. Then we transform the obtained solution for PEMC step by using duality transformation. Perfect electromagnetic conductor (PEMC) theory is novel idea developed by Lindell and Sihvola. This media is interlinked with two conductors namely perfect electric conductor (PEC) and perfect magnetic conductor (PMC). Both PEC and PMC are the limiting cases of perfect electromagnetic conductor (PEMC). We study the magnetic line source diffraction by PEMC step placed in different soils (i) gravel sand (ii) sand and (iii) clay. By using the permittivity, permeability and conductivity of these lossy mediums we predict the loss effect on the diffracted field. Such kind of study is very useful in antenna and wave propagation for subsurface targets and to investigate antenna radiation patterns.

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