Tunable Microwave Absorber Based on Patterned Graphene

Two approaches to realize a tunable absorber based on patterned graphene metasurface are proposed in this paper. In the first approach, different from available absorption amplitude tunable absorbers, the center frequency of the absorber can be tuned by the surface resistance of the graphene in a wide range while maintaining a large absorption coefficient. The second approach, by implying the stack of graphene as the absorbing layer, can introduce a remarkable shift of the center frequency. These two approaches are theoretically illustrated using equivalent circuits and 3-D full wave simulation. Samples that are optically transparent are also fabricated and measured in a rectangular waveguide. A good correlation between simulation and measurement results is obtained.

[1]  A. Tennant,et al.  A single-layer tuneable microwave absorber using an active FSS , 2004, IEEE Microwave and Wireless Components Letters.

[2]  Zheng Wang,et al.  Ultrawideband dispersion control of a metamaterial surface for perfectly-matched-layer-like absorption. , 2013, Physical review letters.

[3]  Xing-Chang Wei,et al.  A Novel Tunable Absorber Based on Vertical Graphene Strips , 2016, IEEE Microwave and Wireless Components Letters.

[4]  N. Engheta,et al.  Thin absorbing screens using metamaterial surfaces , 2002, IEEE Antennas and Propagation Society International Symposium (IEEE Cat. No.02CH37313).

[5]  Gabriel M. Rebeiz,et al.  Switchable low-loss RF MEMS Ka-band frequency-selective surface , 2004, IEEE Transactions on Microwave Theory and Techniques.

[6]  K. Rozanov.  Ultimate thickness to bandwidth ratio of radar absorbers , 2000 .

[7]  A. Lavrinenko,et al.  Graphene metamaterials based tunable terahertz absorber: effective surface conductivity approach. , 2013, Optics express.

[8]  David Shrekenhamer,et al.  Liquid crystal tunable metamaterial absorber. , 2012, Physical review letters.

[9]  D. Yi,et al.  Microcellular graphene foam for improved broadband electromagnetic interference shielding , 2016 .

[10]  K. Novoselov,et al.  Ultrafast collinear scattering and carrier multiplication in graphene , 2012, Nature Communications.

[11]  D. Werner,et al.  A genetic algorithm approach to the design of ultra‐thin electromagnetic bandgap absorbers , 2003 .

[12]  Shanguo Huang,et al.  Magnetically tunable metamaterial perfect absorber , 2016 .

[13]  M. Bozzi,et al.  Broadband Microwave Attenuator Based on Few Layer Graphene Flakes , 2015, IEEE Transactions on Microwave Theory and Techniques.

[14]  Zhongxiang Shen,et al.  A Thin and Broadband Absorber Using Double-Square Loops , 2007, IEEE Antennas and Wireless Propagation Letters.

[15]  J. Volakis,et al.  Novel planar electromagnetic absorber designs using genetic algorithms , 2006, IEEE Transactions on Antennas and Propagation.

[16]  Willie J Padilla,et al.  Highly-flexible wide angle of incidence terahertz metamaterial absorber , 2008, 0808.2416.

[17]  G. Hanson.  Dyadic Green's functions and guided surface waves for a surface conductivity model of graphene , 2007, cond-mat/0701205.

[18]  W. Emerson,et al.  Electromagnetic wave absorbers and anechoic chambers through the years , 1973 .

[19]  Gabriel M. Rebeiz,et al.  A varactor-tuned RF filter , 2000 .

[20]  K. Sarabandi,et al.  A Frequency Selective Surface With Miniaturized Elements , 2007, IEEE Transactions on Antennas and Propagation.

[21]  Philippe Godignon,et al.  Optical nano-imaging of gate-tunable graphene plasmons , 2012, Nature.

[22]  Filippo Costa,et al.  Low-Cost Metamaterial Absorbers for Sub-GHz Wireless Systems , 2014, IEEE Antennas and Wireless Propagation Letters.

[23]  Da Yi,et al.  Experimental demonstration of transparent microwave absorber based on graphene , 2016, 2016 IEEE MTT-S International Wireless Symposium (IWS).

[24]  C. Hafner,et al.  Thin Wideband Radar Absorbers , 2010, IEEE Transactions on Antennas and Propagation.

[25]  J. Perruisseau-Carrier,et al.  Design of tunable biperiodic graphene metasurfaces , 2012, 1210.5611.

[26]  G. Manara,et al.  Analysis and Design of Ultra Thin Electromagnetic Absorbers Comprising Resistively Loaded High Impedance Surfaces , 2010, IEEE Transactions on Antennas and Propagation.