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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 11 — May. 21, 2012
  • pp: 12515–12520

Ultrathin and broadband high impedance surface absorbers based on metamaterial substrates

Yongqiang Pang, Haifeng Cheng, Yongjiang Zhou, Zenggnag Li, and Jun Wang  »View Author Affiliations


Optics Express, Vol. 20, Issue 11, pp. 12515-12520 (2012)
http://dx.doi.org/10.1364/OE.20.012515


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Abstract

An ultrathin and simultaneously broadband high impedance surface absorber based on a metamaterial (MM) substrate is presented at microwave frequencies. The MM substrate is designed using metallic split ring resonators (SRRs) vertically embedded into a dielectric slab. Both the simulated and experimental results display two absorption peaks and an expanded absorption bandwidth of less than −10 dB compared to conventional ultrathin absorbers. By analyzing the field distributions and the substrate impedance characteristics, it is found that this feature is mainly related to the LC resonance of the substrate caused by the embedded SRRs. Our results demonstrate the great feasibility of broadening the absorption bandwidth of the ultrathin high impedance surface absorbers by the MMs incorporation.

© 2012 OSA

OCIS Codes
(260.5740) Physical optics : Resonance
(300.1030) Spectroscopy : Absorption
(160.3918) Materials : Metamaterials

ToC Category:
Metamaterials

History
Original Manuscript: April 5, 2012
Revised Manuscript: April 24, 2012
Manuscript Accepted: May 2, 2012
Published: May 17, 2012

Citation
Yongqiang Pang, Haifeng Cheng, Yongjiang Zhou, Zenggnag Li, and Jun Wang, "Ultrathin and broadband high impedance surface absorbers based on metamaterial substrates," Opt. Express 20, 12515-12520 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-11-12515


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