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2016-01-25
Design of Compact Double-Layer Microwave Absorber for X-Ku Bands Using Genetic Algorithm
By
Progress In Electromagnetics Research B, Vol. 65, 157-168, 2016
Abstract
In this paper, an efficient lightweight double-layer absorber with impedance-matching structure at X-Ku bands was designed, optimized and implemented. First, genetic algorithm (GA) was considered to optimize the thicknesses and material properties for better absorption of the incident electromagnetic wave and reduction of radar cross section (RCS). Next, with the aid of the obtained dielectric and magnetic properties, the microwave absorber was fabricated from magnetodielectric composite materials besides a natural rubber. Finally, the analytical and numerical results were compared with the measurements to check the validity of the design. Experiments showed that the reflection coefficient for each layer backed with a metallic sheet was insufficient; however, for the double layer absorber, the reflectivity measurement values reached up to -28 dB in the case of normal incidence and -17 dB for oblique incidence.
Citation
Hesham Abd El-Hakim, Korany Mahmoud, and Abdelmonem Abdelaziz, "Design of Compact Double-Layer Microwave Absorber for X-Ku Bands Using Genetic Algorithm," Progress In Electromagnetics Research B, Vol. 65, 157-168, 2016.
doi:10.2528/PIERB15111702
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