Abstract
A millimeter-sized artificial periodic structure material is successfully simulated, showing the characteristics of a thin geometric scale, broadband response, and high wave absorption. The periodic structural units are stacked with metal circles, notched circular rings, and the dielectric material. The design is similar to a quasi-two-dimensional planar structure and maintains the broadband while reducing the number of layers in the stack. In addition, the electromagnetic model of this microstructure is established to study its S-parameters and suction properties through the electromagnetic simulations. Numerical results reveal that when the wave is incident vertically, the absorption is over 90% in the frequency range of 14.4-14.8 GHz and 15.4-20.6 GHz. The absorber features the same absorption for different polarization states.
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