Broadband multi-unit composite metamaterial for simultaneous sound wave and electromagnetic wave absorption
Northwestern Polytechnical University · Xiangtan University
Abstract
• Digital multi-unit composite metamaterial achieves noise and electromagnetic wave absorption simultaneously. • Optimized average sound absorption coefficients reach at 0.836, 0.907, 0.957, and 0.97 in different frequencies. • Metal patch could affect the electromagnetic wave absorption which is from Fano resonance absorption peaks. • Digital multi-unit composite metamaterial exhibiting an absorption coefficient exceeding 0.5 between 12 and 30 GHz. We propose a broadband multi-unit composite metamaterial consisting of nine sub-units capable of simultaneously achieving broadband noise reduction and electromagnetic wave absorption. A theoretical model was established to calculate the sound absorption…
Citation impact
- FWCI
- 23.54
- Percentile
- 100%
- References
- 56
Authors
5Topics & keywords
- Materials science
- Metamaterial
- Broadband
- Composite number
- Absorption (acoustics)
- Acoustics
- Electromagnetic radiation
- Optics