نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
In this paper, using the rectangular waveguide transmission line method, electromagnetic characteristics such as permittivity and conductivity for a conductive polymer deposited on PVC insulator substrate have been measured and extracted. First, the values of the dispersion parameters of the material in the waveguide structure have been measured and then, by analyzing the results from two nonlinear least square methods and a method independent of the calibration accuracy, the electromagnetic characteristics of the material in question have been extracted. The measurement results in the 5 to 15 GHz band are in good agreement with both methods. The results can be used in the construction of flexible metamaterial structures in various applications such as non-planar surfaces that reduce the radar cross-section of targets. In this paper, a new method is introduced that overcomes the problem of having to place the sample exactly in the middle of the waveguide and allows the sample material to be placed anywhere in the rectangular waveguide. This method can simplify the measurement and create a new degree of freedom for measuring the sample at different points in the waveguide.
کلیدواژهها English
