DESIGN OF ELECTROMAGNETIC ABSORBERS WITH RIGHT-HANDED AND LEFT-HANDED MATERIALS USING PARTICLE SWARM OPTIMIZATION

• Main Authors: Onur Bozkurt, Tayfun Günel
• Format: Article
• Language: English
• Published: Hezarfen Aeronautics and Space Technologies Institue 2011-01-01
• Series: Havacılık ve Uzay Teknolojileri Dergisi
• Subjects: Left-handed materials; Right-handed materials; Particle Swarm Optimization; Electromagnetic absorbing structures
• Online Access: http://www.jast.hho.edu.tr/JAST/index.php/JAST/article/view/269/247

In this study, ‘Electromagnetic Absorbing Structures’ have been designed using right-handed ( ) and left-handed ( ) materials. The aim of designing these structures is to decrease target’s radar detectability within the range of 8 GHz and 12 GHz by minimizing its reflection coefficient. Various materials with thicknesses ranging between 0.01 mm and 2 mm are considered for the design of the absorbers whose layer number is varying between 1 and 15. Results obtained by optimizing the error function formed by taking into account of polarization (perpendicular and parallel) frequency and angle of incidence are presented and compared. Among evolutionary optimization techniques, ‘Particle Swarm Optimization (PSO)’ is used in order to obtain thin structures with low reflection coefficients. For this purpose, a computer program including a user interface has been developed using MATLAB software.