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A genetic algorithm approach to the design of ultra‐thin electromagnetic bandgap absorbers
Author(s) -
Kern D. J.,
Werner D. H.
Publication year - 2003
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10971
Subject(s) - resistive touchscreen , metamaterial , conductor , microwave , electrical conductor , tunable metamaterials , metamaterial absorber , materials science , band gap , selective surface , optoelectronics , lossy compression , sheet resistance , electronic engineering , engineering , computer science , electrical engineering , nanotechnology , composite material , telecommunications , layer (electronics) , artificial intelligence
A design methodology is presented for utilizing electromagnetic bandgap metamaterials, also known as artificial magnetic conductors, to realize ultra‐thin absorbers. One approach that has recently been proposed is to place a resistive sheet in close proximity to a frequency‐selective surface acting as an artificial magnetic conductor. However, we demonstrate in this paper that incorporating the loss directly into the frequency selective‐surface can eliminate the additional resistive sheet, thereby further reducing the overall thickness of the absorber. The geometrical structure and corresponding resistance of this lossy frequency‐selective surface is optimized by using a genetic algorithm to achieve the thinnest possible absorber. Two examples of genetically engineered electromagnetic bandgap metamaterial absorbers are presented and discussed. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 38: 61–64, 2003