Simulation and experimental studies of broadband multi-resonators metamaterial absorber for satellite communications

In this work, a design for a broadband multi-resonator metamaterial absorber (MTMA) for satellite communications is proposed. This design is based on both numerical and experimental data. Four resonators were used to achieve a broad absorption of more than 99% in the frequency range of 12–16 GHz. The electromagnetic properties (absorption, reflection and transmittance) of the MTMA were analysed and extracted. The parametric effects including the type of substrate, its thickness and the change of the resonator width on the absorption spectrum were studied. Also, surface currents, electric field and magnetic field distributions were investigated and presented at 12.75 GHz. Besides, the proposed design was fabricated by using the LPKFan ProtoMat E33 machine and tested by waveguide connected to a vector network analyzer. It was found that there is a good agreement between the simulation and experimental results. The proposed design can be used for different applications, especially for the application of satellite communications.