Testing of Numerical Simulation Methods for Hybrid Frequency Synthesizers

The generalized model of hybrid frequency synthesizers (frequency synthesis system) is presented in this paper. This model is intended for wireless communication networks of UHF, L and S bands, including mobile networks of the fourth-generation (4G). A technique of testing of numerical simulation methods for frequency synthesizers in the time domain is proposed. This technique of testing is based on the research of computational errors for quality parameters of transient processes and allows realizing a comparative analysis of numerical simulation methods for frequency synthesizers. Numerical simulation of frequency synthesizers was made in Matlab-Simulink package with use of various numerical methods for solving ordinary differential equations. The obtained results allow choosing the most accurate method of numerical simulation and ensuring the reliability of the simulation results for hybrid frequency synthesizers with various parameters, both in linear and nonlinear modes.