Dependence of the oscillations frequency in a nonlinear transmission line with saturated ferrite on magnetic fields and line dimensions

Abstract

In the course of experiments on the excitation of high-frequency oscillations in the nonlinear transmission lines (NLTL) with saturated ferrite, it was shown that the frequency of the excited oscillations in the line depends on the strength of the magnetic fields in which the process of pulsed magnetization reversal of the ferrite filling occurs. It was found that an increase in the frequency of the excited oscillations corresponds to an increase in the azimuthal component of the magnetic field strength, while the frequency decreases with an increase in the strength of the longitudinal magnetic field saturating ferrite. However, to date, it is not possible to determine all the factors that affect the frequencies of excited oscillations in a NLTL, since today there is no analytical model for describing this process that considers non-TEM modes, and experimental study is too expensive. The solution to this problem can be the use of numerical simulation to conduct a numerical experiment on the process of excitation of oscillations in the NLTL. This work is devoted to the determination of the main factors affecting the frequency of excited oscillations in the NLTL with saturated ferrite. The influence of the magnetic field strengths, the coefficient of ferrite transverse filling, and the transverse dimensions of the line on the frequency and efficiency of the excited oscillations was studied.