CAJ | 학술논문

仿真并实验验证了基于电磁谐振的极化无关透射吸收超材料吸波体,该吸波体可以实现低频透射和高频吸收.实验测试结果表明,该吸波体在6.77 GHz吸收率峰值为83.6%,半功率带宽为4.3%,实现窄带强吸收.为进一步拓展该谐振型超材料吸波体的吸收带宽,利用其低频透射特性,将两个工作于不同频段的吸波体叠加在一起,测试结果表明,复合后超材料吸波体的半功率带宽可以增大到10.9%,吸收率也略有增强.该超材料吸波体设计简单,具有较强的实用性和应用前景.
방진병실험험증료기우전자해진적겁화무관투사흡수초재료흡파체,해흡파체가이실현저빈투사화고빈흡수.실험측시결과표명,해흡파체재6.77 GHz흡수솔봉치위83.6%,반공솔대관위4.3%,실현착대강흡수.위진일보탁전해해진형초재료흡파체적흡수대관,이용기저빈투사특성,장량개공작우불동빈단적흡파체첩가재일기,측시결과표명,복합후초재료흡파체적반공솔대관가이증대도10.9%,흡수솔야략유증강.해초재료흡파체설계간단,구유교강적실용성화응용전경.
@@@@In this paper, we simulate and experimentally validate a polarization-independent transmission absorption metamaterial absorber based on electromagnetic resonance. The metamaterial absorber can absorb the high-frequency electromagnetic wave, and the low-frequency wave can transmit through the absorber. The tested results indicate that the metamaterial absorber can achieve a narrow bandwidth high absorption with a peak absorption of 83.6% at 6.77 GHz, and a full width at half maximum (FWHM) of 4.3%. To further broaden the absorption bandwidth of the resonant metamaterial absorber, we place two absorbers with different working frequencies together for its low-frequency transmitted characteristic. The measured data show that the composite metamaterial absorber can increase the FWHM to 10.9%, and can enhance the absorption slightly. The metamaterial absorber has some advantages, such as simple design, strong practicability, and important application foreground.