Presentation of an Applicable Method for Characterization of Electromagnetic Parameters of Ferrite Materials at Ku Band

Since validation of the electromagnetic parameters of manufactured or purchesed ferrite materials is the first step in designing and implementation of the diffrent ferrite-based devices in communication systems, ferrite characterization is verry important. in this paper an algorithm is simulated and implemented which is based on the minimization of an objective function. the objective function's parameters are the reflection and transmission coefficients of the ferrite in a rectangular wave guide.in compairsion with other works proposed method only needs to the amplitude of the reflection and transmission coefficients to estimate the parameters of ferrite materials. This makes the implementation easy and eliminates the problems associated with phase calibration and sensitivity. The proposed method is simulated for a nickel ferrite and experimentally tested on SL-470 ferrite sample and the results have been compared with the manufacturer's catalog.