期刊
MODERN PHYSICS LETTERS B
卷 34, 期 16, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217984920501754
关键词
Optical transparency; metamaterial absorber; Jerusalem cross structure; S-band microwave
资金
- National Natural Science Foundation of China [61772554, 61370229, 61370178]
- Research Foundation of Education Bureau of Hunan Province [17B238]
An optically transparent metamaterial absorber (MMA) has been demonstrated numerically and experimentally at the S-band. The designed MMA is composed of polymethyl methacrylate (PMMA), indium-tin-oxide (ITO) attached to polyethylene terephthalate (PET) film, and numerically provides effective absorption with reflection loss lower than -10 dB in the frequency range of 1.85-4.65 GHz. Experimental measurement shows the reflection loss of the proposed MMA is better than -10 dB from 2.00 GHz to 4.25 GHz, which agrees pretty well with the simulated results. Distributions of surface current, electromagnetic field and power loss density for the designed MMA are systematically investigated to explain microwave attenuation characteristic and loss mechanisms. More importantly, the prepared sample exhibits an optical transparency above 68% in the whole visible band, thus realizing a wide range of applications, such as optically transparent S-band absorbers.
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