Further discussion of “multiple frequency bands of square split resonant rings and metal wires metamaterial”

Gao, Peng; Ai, Jingjing; Zhang, Shuaiyi; Kang, Yongqiang; Zhang, Chunmin

doi:10.1016/j.ijleo.2015.10.181

Cited by 1 publication

(2 citation statements)

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“…Double split ring resonators are used because they provide larger current density and magnetic moment compared to single split ring due to capacitive and inductive coupling between the rings. Furthermore, two rings with different radius in a unit cell contribute to resonances at different frequencies which cause multiband absorption . The mean radius, r mean of the ring can be determined knowing that the ring resonators support waves that have an integral multiple of the guided wavelength equal to the mean circumference .…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, two rings with different radius in a unit cell contribute to resonances at different frequencies which cause multiband absorption. 32 The mean radius, r mean of the ring can be determined knowing that the ring resonators support waves that have an integral multiple of the guided wavelength equal to the mean circumference. 33 The resonance frequency, f is inversely proportional to the mean radius, r mean of the ring.…”

Section: Unit Cell Designmentioning

confidence: 99%

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Multiband metamaterial microwave absorbers using split ring and multiwidth slot structure

Sim

You

Esa

et al. 2018

Int J RF Microw Comput Aided Eng

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This article proposes a multiband metamaterial microwave absorber based on a split ring‐slot structure. Both simulation and experimental measurements are carried out to obtain the scattering parameters which are used to retrieve the absorption coefficient, relative permittivity, and relative permeability. The influences on the absorption produced by geometrical dimensions, incidence angles and polarisation angles are investigated from 1.5 to 18.0 GHz. The results show that the absorber possesses three resonance peaks with absorption greater than 70% measured experimentally at 3.0, 5.8, and 11.0 GHz. The absorption performance is insensitive to the angle of incidence, θ up to 60°.The absorption mechanisms are studied based on the surface current distribution, electric field distribution, and constitutive parameters (μ r and ε r). Furthermore, a mechanical mean using dielectric material to tune the absorption frequencies (up to 1.0 GHz of tuning range) and enhance the absorption bandwidth (up to 50%) is demonstrated.

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Section: Methodsmentioning

confidence: 99%

Section: Unit Cell Designmentioning

confidence: 99%