MODELS OF A SYMMETRIC VIBRATOR IN THE FREQUENCY RANGE
Here we consider mathematical models of symmetrical vibrators for given overall dimensions in the frequency range. We propose the transition of input impedances calculated for different relative lengths of vibrators to the frequency range, which is necessary for further research of broadband vibrator antennas. We considered classical expressions for calculating the input impedances of a half-wave vibrator in the frequency range, as well as a vibrator model in the form of a series RLC circuit, a modernized RLC circuit, where R is given as a function of frequency, and a model on long lines. The proposed models accurately describe the classical expressions for the vibrator input impedances. We considered these models for a classical symmetric cylindrical vibrator, in the decimeter wavelength range. We give and describe the equivalent schemes of mathematical models of the vibrator. We made comparisons between the calculated input impedances of the vibrator in the frequency range according to the proposed models with classical expressions. The results of calculating the input impedances of the vibrator according to the proposed models and classical expressions with high accuracy within 7-10% coincide in 67% of the frequency band. These models allow you to make a simple transition to the construction of two-, three-loop models of vibrator antennas