Title :
Optimal design of wideband radar absorbing structure consisting of resistive meta-surface layers
Author :
Zhou, S.N. ; Wang, Z.B. ; Feng, Y.J.
Author_Institution :
Dept. of Electron. Sci. & Eng., Nanjing Univ., Nanjing, China
Abstract :
In this paper we propose an optimal design of ultrawideband (4 ~ 20 GHz) absorbers composed of two resistive meta-surface layers of different square patch arrays. Gradient Descent and Genetic Algorithm are employed to optimize all the parameters through equivalent transmission line circuit model. The circuit parameters are then implemented by a multilayer including two resistive meta-surface of square patch structures. Two types of such absorbing structures, with the total thicknesses close to that of the known theoretical limit, are designed and their performance are verified by full wave simulation.
Keywords :
electromagnetic wave absorption; equivalent circuits; genetic algorithms; radar absorbing materials; transmission line theory; circuit parameters; equivalent transmission line circuit model; frequency 4 GHz to 20 GHz; full wave simulation; genetic algorithm; gradient descent algorithm; multilayer; optimal design; resistive meta-surface layers; square patch arrays; square patch structures; ultrawideband absorbers; wideband radar absorbing structure; Absorption; Bandwidth; Capacitance; Dielectrics; Frequency selective surfaces; Integrated circuit modeling; Reflection;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230475
