التفاصيل البيبلوغرافية
| العنوان: |
A low-frequency ultrathin metamaterial absorber using magnetic material. |
| المؤلفون: |
Shou, Haijun, Qi, Buxiong, Lv, Huanchang, Feng, Junlang, Mei, Zhonglei |
| المصدر: |
Journal of Applied Physics; 2/28/2024, Vol. 135 Issue 8, p1-6, 6p |
| مصطلحات موضوعية: |
MAGNETIC materials, DENSITY currents, PRINTED circuits, POWER density, METAMATERIALS |
| مستخلص: |
In this paper, an ultra-thin metamaterial absorber (UMA) in the S-band is designed. The overall structure adopts a three-layer design. The top layer is a magnetic material, and the middle layer of the UMA is composed of a centrally symmetrical open square ring (four edges are opened) and a circular pattern placed at the center, which is etched on the FR4 dielectric substrate by printed circuit board technology. The absorptivity of the absorber is more than 90% in 1.73–4.04 GHz under normal incidence, and the fractional bandwidth is 80.1%. The total thickness of the absorber is about 3.4 mm, corresponding to 0.02 λ L at the lowest operating frequency. Moreover, it also has good polarization insensitivity and wide-angle incident characteristics. The absorption mechanism of the UMA is analyzed from the aspects of power loss density and surface current. Finally, a sample was fabricated and measured. The measured results are in good agreement with the simulation results, which verifies the effectiveness of the design method. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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