Microcontroller Based Fractional Digital Frequency Synthesizer
Date issued
2023
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of West Bohemia
Abstract
A frequency synthesizer is a system that generates a desired frequency from one or more reference frequencies. In this paper, a new simple digital frequency synthesizer is described that allows to generate at the output a signal whose frequency is the sum or difference of the frequencies of 2 input signals divided by an adjustable constant. The paper presents the simulation results of the synthesizer but also the measurement results because the synthesizer was not only simulated but also actually implemented using a microcontroller. The main advantage is that the synthesizer can be created by a program in the microcontroller.
Description
Subject(s)
direct digital frequency synthesis, indirect frequency synthesis, frequency synthesizer, counter, interrupt, microcontroller, phase locked loop