Polarization Insensitive Metamaterial Absorber with Wide Incident Angle

This paper presents the design, fabrication and measure- ment of a polarization insensitive microwave absorber based on meta- material. The unit cell of the metamaterial consists of four-fold rota- tional symmetric electric resonator and cross structure printed on each side of a print circuit board to realize both electric and magnetic reso- nances to achieve e-cient absorption of the incident microwave energy. Both the full wave electromagnetic simulation and the measurement on the fabricated absorber demonstrate high microwave absorption up to 97% for difierent polarized incident electromagnetic waves. To under- stand the mechanism, analysis is carried out for the electromagnetic fleld distribution at the resonance frequency which reveals the work- ing mode of the metamaterial absorber. Moreover, it is verifled by experiment that the absorption of this kind of metamaterial absorber remains over 90% with wide incident angle ranging from 0 - to 60 - for both transverse electric wave and transverse magnetic wave.

[1]  David R. Smith,et al.  Broadband Ground-Plane Cloak , 2009, Science.

[2]  Wide-angle Absorption by the Use of a Metamaterial Plate , 2008 .

[3]  Bo O. Zhu,et al.  Sub-wavelength image manipulating through compensated anisotropic metamaterial prisms. , 2008, Optics express.

[4]  David R. Smith,et al.  Metamaterial Electromagnetic Cloak at Microwave Frequencies , 2006, Science.

[5]  Stewart,et al.  Extremely low frequency plasmons in metallic mesostructures. , 1996, Physical review letters.

[6]  Costas M. Soukoulis,et al.  Wide-angle and polarization-independent chiral metamaterial absorber , 2009, 1005.3869.

[7]  Hua Ma,et al.  Three-Dimensional Metamaterial Microwave Absorbers Composed of Coplanar Magnetic and Electric Resonators , 2009 .

[8]  Zhaowei Liu,et al.  Optical Negative Refraction in Bulk Metamaterials of Nanowires , 2008, Science.

[9]  Willie J Padilla,et al.  Composite medium with simultaneously negative permeability and permittivity , 2000, Physical review letters.

[10]  K. Malloy,et al.  Experimental demonstration of near-infrared negative-index metamaterials. , 2005, Physical review letters.

[11]  D. Larkman,et al.  Microstructured magnetic materials for RF flux guides in magnetic resonance imaging. , 2001, Science.

[12]  J. Pendry,et al.  Magnetism from conductors and enhanced nonlinear phenomena , 1999 .

[13]  M. Wegener,et al.  Magnetic Response of Metamaterials at 100 Terahertz , 2004, Science.

[14]  Costas M. Soukoulis,et al.  Wide-angle perfect absorber/thermal emitter in the terahertz regime , 2008, 0807.2479.

[15]  Willie J Padilla,et al.  A metamaterial absorber for the terahertz regime: design, fabrication and characterization. , 2008, Optics express.

[16]  Jin Au Kong,et al.  Robust method to retrieve the constitutive effective parameters of metamaterials. , 2004, Physical review. E, Statistical, nonlinear, and soft matter physics.

[17]  Tatsuo Itoh,et al.  Electromagnetic metamaterials : transmission line theory and microwave applications : the engineering approach , 2005 .

[18]  Ekmel Ozbay,et al.  Experimental demonstration of a left-handed metamaterial operating at 100 GHz , 2006 .

[19]  J. Pendry,et al.  Negative refraction makes a perfect lens , 2000, Physical review letters.

[20]  Willie J Padilla,et al.  Perfect metamaterial absorber. , 2008, Physical review letters.