Title :
Broadband electromagnetic absorber designs using genetic algorithm
Author :
Piao, Dazhi ; Li, Yanfei ; Lu, Guizhen
Author_Institution :
Commun. Univ. of China, Beijing
Abstract :
A new type of broadband electromagnetic (EM) absorber is designed with the genetic algorithm (GA). The absorber is based on a multilayer dielectric substrate sandwiched by the frequency selective surface (FSS) with resistive patch. Equivalent circuit theory shows that the normal incidence refection coefficient of this GA optimized structure is lower then -5 dB in the frequency band of 2-18 GHz with a thickness less than 1 cm. The reflection characteristic of this broadband absorber is also verified by the analysis of the Finite Element Method (FEM).
Keywords :
electromagnetic devices; finite element analysis; frequency selective surfaces; genetic algorithms; broadband electromagnetic absorber; equivalent circuit theory; finite element method; frequency 2 GHz to 18 GHz; frequency selective surface; genetic algorithm; multilayer dielectric substrate; normal incidence refection coefficient; resistive patch; Algorithm design and analysis; Bandwidth; Capacitance; Design optimization; Dielectric substrates; Frequency selective surfaces; Genetic algorithms; Nonhomogeneous media; Permittivity; Reflection;
Conference_Titel :
Automation Congress, 2008. WAC 2008. World
Conference_Location :
Hawaii, HI
Print_ISBN :
978-1-889335-38-4
Electronic_ISBN :
978-1-889335-37-7
