A Review of Optimisation Techniques for Layered Radar Absorbing Materials: Including the Genetic Algorithm

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Authors
  1. Saville, P.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
Abstract
The absorption of microwaves by a material depends on the properties of the material and its structure. Broadband absorbers are can be fabricated by stacking resistive sheets separated by low dielectric spacers with a thickness of a quarter wavelength. This type of multilayered resonant absorber is called the Jaumann absorber. In this paper optimal design techniques for multilayer microwave absorbers are reviewed. These methods include analytical approximations, gradient optimisation routines, simulated annealing and the genetic algorithm. The genetic algorithm is a highly parallel stochastic technique that permits multi-objective optimisation and has a high probability of finding the global minimum.

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Keywords
Genetic Algorithm;Optimisation;multi−objective;Jaumann;Absorber;layered;Salisbury Screen;Dallenbach;microwave;radar;bandwidth;thickness;reflectivity
Report Number
DRDC-ATLANTIC-TM-2004-260 — Technical Memorandum
Date of publication
01 Nov 2004
Number of Pages
38
DSTKIM No
CA025508
CANDIS No
523186
Format(s):
Hardcopy

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