磁谐振频率选择表面吸波性能研究

With the achievement in information technology, the demands on stealth technologyhas and microwave absorbing materials become daily increased. How to meet the requirements of thin, lightweight, broadband, and strength has become an increasingly prominent research direction. In this paper, by introducing the concept of artifical magnitic conductor and modified from traditional electric frequency selective surfaces (FSSs), we proposed the magnetic resonant FSS. Taking the advantage of Genetic Algorithm and its integer programming, we optimize the microwave absorbing efficacy of the magnetic FSS, after which an optimized structure operating at specific frequency domain has been achieved. Then the optimal magnetic FSS was fabricated, and its performance was measured through wave reflection method. Both the numerical and experimental results show that this structure exhibits good absorbing performance in the X band, while the sample is 35% thinner than traditional magnetic absorbing materials. This result proves the validity and effectiveness of design and optimization method.