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Broadband Reflection of Polarization Conversion by 90 in Metamaterial
P. V. Tuong,J. W. Park,Y. J. KIM,Y. J. Yoo,Y. P. Lee,J. Y. Rhee,K. W. Kim,S. A. Nikitov,N. H. T. Anh 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.64 No.8
We developed a reflection polarization convertor by using the conventional metamaterial absorber. The metal-dielectric-metal sandwich structure, in which copper split ring at the front and metallicplane at the back are separated by FR-4, was employed to investigate for the GHz regime. Thisshows that a broadband of 14−18 GHz with reflectance of 36−55% is converted to 90 -polarizationmode, while the original one is nearly harvested (absorption of 95−100%). In other words, theoriginal electromagnetic (EM) wave is “perfectly” absorbed and partly emitted as 90 -twisted EMwave, and the remaining is dissipated as heat.