Free-Space Measu Rement Of Dielectric Parameters Of16Elements Error Control Model

In this paper A varity of methods about medium electromagnetic parametersmeasurements are detaily compared further discussed commonly methods ofelectromagnetic parameters of double negative media in the free space and waveguidemeasurement. By analysis of measurement results, a dielectric medium parameters forthe control of measurement error are introduced. Finally, this approach is verified by thenumerical simulation methods.Firstly, a variety of methods about medium electromagnetic parametersmeasurements are introduced,the principle of a variety of measuredments methods isdiscussed,and the measuredment application in homogeneous isotropic media isapplied,the advantages and disadvantages of various methods are compared,and rangeof applications is compared,too.The NRW formulas of electromagnetic constitutiveparameters reconstruction of dielectric medium are educed from EM theory,and phaseautomatic control is realized by using Taylor formula.The inversion formulas ofconstitutive parameters of DNG in waveguide are given through revising the NRWmethod according to the difference between DNG and ordinary medium.Secondly,by analyzing the inversion method,the reasons for the error produced isdiscussed,then a16elements error control mode is discussed,and this error of measuringis corrected by using error control mode.The theory and the application are detailedabout this error model.Finally,effective dielectric parameters is measured by using FDTD numericalsimulation methods,the measured numerical results are corrected by using16elementserror control mode methos.