切比雪夫吸波材料的设计与仿真
Chebyshev Multilevel Absorber Design and Simulation
摘要 利用仿真软件HFSS研究了30 MHz~1 GHz频段内碳填充型聚氨酯角锥和三级锥形切比雪夫多级吸波材料的吸波性能。结果表明,碳填充型聚氨酯角锥在100 MHz以上的高频段吸波性能较好,但在低频段吸波性能并不是很理想。在所含碳含量相等的情况下,采用切比雪夫吸波材料后吸波性能得到了明显改善,低频段大多数频点的反射率能够降低3 dB以上。
关键词 切比雪夫多级吸波材料;碳填充型聚氨酯角锥;反射率;吸波性能;仿真软件HFSS
Abstract The absorbing properties of the carbon filled polyurethane pyramid and
Chebyshev absorber is investigated using simulation software HFSS.The results show
that absorbing properties of the polyurethane pyramid filled with carbon performs well
in the higher frequency over 100 MHz, but is not acceptable at the low end of the
frequency band. Compared to traditional pyramids, the absorbing properties of the
Chebyshev multilevel absorber has got remarkable improvement with the same carbon
loading. And more than a 3dB improvement can be achieved at the low end of
frequency.
Keywords Chebyshev multilevel absorber; carbon filled polyurethane pyramid;
reflectivity; absorbing properties; HFSS
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