https://doi.org/10.1051/epjap/2016160070
Regular Article
Optimization of multilayer cylindrical cloaks using genetic algorithms and NEWUOA
Engineering Mathematics and Physics Department, Faculty of Engineering, Cairo University, 12211 Giza, Egypt
a e-mail: abdelmag@msn.com
Received:
14
February
2016
Revised:
26
March
2016
Accepted:
4
April
2016
Published online:
3
June
2016
The problem of minimizing the scattering from a multilayer cylindrical cloak is studied. Both TM and TE polarizations are considered. A two-stage optimization procedure using genetic algorithms and NEWUOA (new unconstrained optimization algorithm) is adopted for realizing the cloak using homogeneous isotropic layers. The layers are arranged such that they follow a repeated pattern of alternating DPS and DNG materials. The results show that a good level of invisibility can be realized using a reasonable number of layers. Maintaining the cloak performance over a finite range of frequencies without sacrificing the level of invisibility is achieved.
© EDP Sciences, 2016
