Przegląd Elektrotechniczny

Oldest magazine of Polish electrician. It appears since 1919.

strona w języku polskim english page

No/VOL: 09/2022 Page no. 119

Authors: Magdalena Budnarowska , Jerzy Mizeraczyk :

Title: Simulation and experimental studies of the electromagnetic properties of a planar metamaterial array structure in the microwave range

Abstract: The article presents the results of a numerical simulation of the interaction of microwave electromagnetic radiation with a planar metamaterial matrix (MM) composed of original single cells of the metamaterial. The numerical simulation results are compared with experimental results. The planar metamaterial matrix structure was designed to be used as a highly absorbing EM energy collector in the 2-3 GHz band. The CST Studio environment was used for the numerical simulation, which enables the solving of electromagnetic problems in a wide frequency range. The reflection, absorption and transmission coefficients of microwave radiation through the designed matrix were determined numerically under waveguide conditions. The numerical results showed that the absorption of microwave radiation by the metamaterial matrix is resonant. The highest absorption coefficient (about 96%) occurs at about 2.6 GHz. According to the project, a real metamaterial matrix was built and its electromagnetic properties were examined experimentally using the Keysight N5225 vector network analyzer in the waveguide operating mode. The obtained experimental results were compared with the results of the numerical simulation. The comparison showed a very good agreement of the simulation and experiment results. They confirmed that the tested metamaterial matrix shows strong absorption properties and can be useful for building larger absorbers of microwave radiation. Experimental positive validation of simulation results proves that CST Studio is a reliable tool for the design and analysis of microwave absorbing metamaterials. The MM matrix presented in this article will be used in the near future to build larger absorbers.

Key words: metamaterial absorbers of electromagnetic radiation, electromagnetic harvester, metamaterials, interaction of electromagnetic radiation with microwave metamaterial structures