Implementation of opportunities of labview software package in case of design of electronic frequency synthesizer on the basis of PAAF

摘要

Identified features that need to be considered when developing virtual appliances in a Lab VIEW environment. The simplest system of phase-locked loop with the indication of its disadvantages is given. Based on the software package Elanix SystemView complex LabVIEW built a model of frequency synthesizer based on PLL and for the given parameters and the division ratio of 5000 (the synthesized frequency is 2500 MHz), the system model was simulated on a time interval of 500 μs and at 3,075,782 sampling points. It was found that the spectrum of the signal in the region of the synthesized frequency as a whole approaches the spectrum of the harmonic signal, but it should be noted that parasitic harmonics are multiples of 50 kHz, and a low relative level of the useful signal is slightly more than 38 dBm.