Calculations of a wideband metamaterial absorber using equivalent medium theory
| Autor: | Danqi Wang, Yanchao Lou, Shengqing Yu, Helin Yang, Xiaojun Huang, Ling Guo |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Acoustics and Ultrasonics business.industry Metamaterial 02 engineering and technology Molar absorptivity 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electromagnetic radiation Surfaces Coatings and Films Electronic Optical and Magnetic Materials Full width at half maximum Digital subscriber line Optics 0103 physical sciences Metamaterial absorber Wideband 010306 general physics 0210 nano-technology Absorption (electromagnetic radiation) business |
| Zdroj: | Journal of Physics D: Applied Physics. 49:325101 |
| ISSN: | 1361-6463 0022-3727 |
| DOI: | 10.1088/0022-3727/49/32/325101 |
| Popis: | Metamaterial absorbers (MMAs) have drawn increasing attention in many areas due to the fact that they can achieve electromagnetic (EM) waves with unity absorptivity. We demonstrate the design, simulation, experiment and calculation of a wideband MMA based on a loaded double-square-loop (DSL) array of chip resisters. For a normal incidence EM wave, the simulated results show that the absorption of the full width at half maximum is about 9.1 GHz, and the relative bandwidth is 87.1%. Experimental results are in agreement with the simulations. More importantly, equivalent medium theory (EMT) is utilized to calculate the absorptions of the DSL MMA, and the calculated absorptions based on EMT agree with the simulated and measured results. The method based on EMT provides a new way to analysis the mechanism of MMAs. |
| Databáze: | OpenAIRE |
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