Broadening the absorption bandwidth of metamaterial absorber by coupling three dipole resonances
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- 2018 Broadening the absorption bandwidth of metamaterial absorber by coupling
Accepted author manuscript, 149 KB, PDF document
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We numerically and experimentally investigated the metamaterial absorber (MMA) based on ring and dish structures in GHz region. It found that the combined structure of ring and dish (RD) exhibit dual-band absorption peaks at 8.6 and 15.6 GHz. By replacing the ring to the structure of split-ring and dish (SRD), the first magnetic resonance peak is shifted from 8.6 to 14.0 GHz. The physical mechanism of magnetic resonance frequencies was elucidated using simple LC circuit model. We achieved a broadband MMA with bandwidth of 3.7 GHz by arranging four SRD structures into a super unit-cell. The experimental results are good agreement with both the numerical simulation and calculation.
| Original language | English |
|---|---|
| Pages (from-to) | 90-94 |
| Journal | Physica B: Condensed Matter |
| Volume | 532 |
| Early online date | 30 Mar 2017 |
| DOIs | |
| Publication status | Published - 1 Mar 2018 |
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