Journal of the Korean Institute of Telematics and Electronics D (전자공학회논문지D)
- Volume 34D Issue 3
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- Pages.17-24
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- 1997
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- 1226-5845(pISSN)
Design of broad-band radar absorbing materials using multi-layered lossy dielectrics
다층 손실 유전체를 이용한 광대역 전파 흡수체 설계
Abstract
Broad-band RAM's (Radar absorbing materials) are designed by multi-layered lossy dielectrics. The depth, the relative permittivity and the loss tangent of each layer are optimized in order to meet the required reflective power over the specified frequency range using a genetic algorithm. The reflection coefficients are calculated by the continued fraction method. A new population model of the partial initialization method during iterations is applied for the multi-modal functions to enhance the performance of the genetic algorithm. The optimal RAN's are designed by setting the relative permittivity and the loss tangent of the dielectrics as a funtion of the frequency over 5~20GHz.
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