Modeling the microwave section to frequency synthesizer

The authors of the paper present a method for constructing of the models of microwave frequency synthesizer section for a fixed frequency as a control object for the purpose of further development of AGC system. The static and dynamic characteristics of the control object have been studied. The authors have determine the coefficients of static characteristics of transmission controlled attenuator in two ranges of values of the control action for three frequencies: 5, 6 and 7 GHz. For dynamic characteristics of the control object, the order and coefficients of the equations, describing the dependence of the output power on the input power, and the control action, applied to the attenuator, and the dependence of the output voltage on the detector output have been defined. The results of comparative analysis of the model and the real object have been presented. The developed model corresponds to the real object.