Metamaterial absorber using complementary circular sector resonator
2016
In this paper, a polarization-insensitive metamaterial absorber is proposed. The unit cell of the metamaterial is designed with a novel complementary circular sector resonator is introduced for the polarization — insensitivity of the MM absorber. A vertically and horizontally symmetric structure of unit cell enables polarization-insensitivity. The performances of the proposed absorber are demonstrated with full-wave simulation and measurements. The measured absorptivity at 10.32 GHz is close to 99% for all polarization angles under normal incidence. The simulated and measured absorptivity of the normal incidence of the proposed absorber are demonstrated in Fig. 2. The Fig. 2 shows that the absorptivity of the normal incidence of the proposed absorber is kept 99% at 10.32 GHz while the simulated is 96% at 10.36 GHz.
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