Návrh modulátoru a demodulátoru pro impulsní šířkovou modulaci

Abstract

This bachelor thesis deals with issues of Pulse Width Modulation (PWM), designing and realization of modulator and demodulator for teaching purposes. In the first captures theoretical principles of functionality are described, followed by determining of practical application of the PWM. Further comes theoretical designing of the modulator in which the description of each functional part of the device is given. Also testing of the modulator and tuning of his functionality is there. Following captures provide simplified view on the frequency spectrum of PWM signal. This spectrum of PWM is necessary for designing the demodulator. The final part of this thesis describes each part of the demodulator and the realization of it. After the practical application both designs (the modulator and the demodulator) are tested, measured and evaluated at the end of the main two captures.