An Optimal Design of Microwave Absorbing Material

Seo, Il-Sung; Song, Jung-Kun

Journal of the Korea Institute of Military Science and Technology 2010;13(5):869-874.

Il-Sung Seo, Jung-Kun Song

전파흡수능 최적화 설계

서일성, 송정근

국방과학연구소

Abstract

A research for the optimal design of microwave absorbing material featuring for the broadband has been conducted to apply to warship. A multilayered structure was suggested using wave absorbing layers and resistance layer to perform high performance in broadband frequencies. For the optimization of the wave absorbing characteristics, the thickness and permittivities of the absorbing layers as well as the surface resistance of the resistant layer were determined using genetic algorithm. The data base of permittivities related to the density of the dielectric materials and loss materials was obtained by the experiments for the dielectric constants of the absorbing layers, furthermore, the results were numerically expressed and used for the optimization.

Key Words: Optimal Design, Wave Absorbing Characteristics, Broadband