volume | PIER Journals

2015-09-30

RCS Reduction of Cylindrical Structure Using Mixed-Impedance Boundary Conditions

Ali Azarbar,

Dr. Ali Azarbar

Department of Computer and Information Technology Engineering

Islamic Azad University

Iran

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Mostafa Mashhadi

Mr. Mostafa Mashhadi

College of Electrical Engineering

Iran University of Science and Technology

Iran

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Progress In Electromagnetics Research Letters, Vol. 56, 133-139, 2015

doi:10.2528/PIERL15061808

Abstract

In this paper, the problem of RCS reduction in cylindrical structures with various boundary conditions are investigated comprehensively. It has been done through a general form of boundary conditions called Mixed-Impedance boundary conditions. Genetic algorithm, a powerful optimization method, is used to explore specific conditions that provide major reduction of cylindrical structure's RCS. The optimizations are performed in case of normally and obliquely incident illuminations. Finally, the optimized values are formulated in terms of incident angle to construct a simple and fast way of evaluation of the minimum RCS situation. The results are compared with a cylindrical PEC structure, and it has been verified that the optimized values of MI boundary conditions could result in significant backward RCS reduction for both normal and oblique incident.

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Ali Azarbar, and Mostafa Mashhadi, "RCS Reduction of Cylindrical Structure Using Mixed-Impedance Boundary Conditions," Progress In Electromagnetics Research Letters, Vol. 56, 133-139, 2015.
doi:10.2528/PIERL15061808

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