Production And Electromagnetic Analysis Of Microwave Tunable Frequency Metamaterial

This research is dedicated to EM simulation analysis of metamaterial-based sample with tunable frequency selective and cloaking effect in microwave frequency regime.Sample is composed of array of liquid metallic split ring resonators(SRRs)embedded in a epoxy resin substrate.When stretched,sample performs as a tunable frequency selective surface with a wide resonance frequency tuning range.We studied frequency response of the meta-array to stretching in planar direction and to changing amount of the SRR cells in the array,also scattering suppression was investigated by computing scattering field.Based on the tensile stress test results,substrate ratios were chosen.Stretching simulation was performed using ABAQUS-commercial software suit for finite element analysis and computer-aided engineering.Data for ABAQUS simulation was based on the substrate ratio.EM simulation was done using Ansys High Frequency Simulation Software,which is a commercial finite element method solver for electromagnetic structures.Data for HFSS was simulated by analyzing the behavior of the 1 meta-unit cell.By simulating stretching a single cell sample to 50%,the resonance frequency was tuned from 12.50 GHz to 13.80 GHz.The scattering from the source was suppressed by about 22%.8 SRR array simulation had shown similar behavior to single cell unit,but this data requires further verification due to non-linear stretching relation of the sample.It is believed that the present meta-cover technology will find many applications in EM frequency tuning,shielding and scattering suppression.In a research dedicated to EM simulation analysis,computational results of frequency selective response can be further processed to increase performance prediction accuracy using transfer functions,additional model parameters – different temperature conditions,different layer thickness,dynamic modules change,etc.However,since this part is solely dedicated to show the base capabilities of EM simulation software on the example of microwave Meta-skin with frequency selective,computational results are analyzed as-is and validation is performed referentially by using already completed research to prove the analytical accuracy of approach and by using computational results performed by a laboratory tests to prove the results.