Affiliation:
1. İSTANBUL TEKNİK ÜNİVERSİTESİ
2. ISTANBUL TECHNICAL UNIVERSITY
Abstract
The study presents electromagnetic scattering by arbitrarily located double strips with perfect electric and/or magnetic conducting surfaces. The study generalizes not only the physical dimension, location, and orientation of the strips but also, the boundary conditions on each strip are generalized and variable. It can be Dirichlet or Neumann boundary conditions. Since the study considers numerous parameters as the variable, the comparison between the present study and the literature is investigated in detail. Geometries such as parallelly located double strips with fractional boundary conditions, impedance double strips, and wedge problems are considered to compare. Besides, the proposed methodology is compared by the method of moments, the method of auxiliary sources, and the orthogonal polynomials approach. The suggested research investigates the electromagnetic scattering by finite wedge and arbitrarily located two strips with different boundary conditions and widths for the first time since each strip can have different widths and boundary conditions (Dirichlet or Neumann). The results reveal that the angle between the strips, the rotation of the strips, width of the strip have noticeable effects on the scattered field and total radar cross-sections. Between the strips, resonances are observed and their characteristics have a substantial dependency on the boundary conditions.
Publisher
Gazi University Journal of Science
Subject
Multidisciplinary,General Engineering
Reference32 articles.
1. [1] Nethercote, M. A., Assier, R. C., and Abrahams, I. D., "Analytical methods for perfect wedge diffraction: a review", Wave Motion, 93: 102479, (2020).
2. [2] Vinogradov, S. S., Smith, P. D., and Vinogradova, E. D., Canonical problems in scattering and potential theory part II: Acoustic and electromagnetic diffraction by canonical structures, Chapman and Hall/CRC, (2002).
3. [3] Bowman, J. J., Senior, T. B. A., and Uslenghi, P. L. E., Electromagnetic and acoustic scattering by simple shapes (Revised edition), Hemisphere Publishing Corp., New York, (1987).
4. [4] Alkumru, A., “Plane wave diffraction by three parallel thick impedance half-planes”, Journal of Electromagnetic Waves and Applications, 12(6): 801–819, (1998).
5. [5] Tabatadze, V., Karaçuha, K., Veliyev, E. I., and Karaçuha, E., “The Diffraction by Two Half-Planes and Wedge with the Fractional Boundary Condition”, Progress in Electromagnetics Research M, 91: 1–10, (2020).