Broadband electromagnetic absorber designs using genetic algorithm

Author

Piao, Dazhi ; Li, Yanfei ; Lu, Guizhen

Author_Institution

Commun. Univ. of China, Beijing

fYear

2008

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

Filename

4699152