Adaptive Integral Pulse Frequency Modulator

Tema ovog završnog rada je adaptivni integralni impulsno frekvencijski modulator. Na početku su opisani svi analogni impulsni postupci moduliranja signala kojima prethodi općeniti uvod u modulacije. Naglasak je stavljen na metodi moduliranja frekvencije impulsa (PFM) u izvedbi s integratorom. Ovisno o predznaku IPFM–a u ovome radu su dane karakteristike i matematički opis unipolarnog i bipolarnog IPFM-a. Na kraju teorijskog dijela objašnjene su adaptivne tehnike te primjena adaptivnih tehnika u analognoj domeni na dani modulator. Kroz simulaciju u programskom paketu Matlab blokovskim shemama su prikazani modeli idealnog i adaptivnog IPFM-a te su opisani njihovi valni oblici na izlazu iz integratora i modulatora ovisno o karakteristikama signala na ulazu.The topic of this final paper is adaptive integral pulse frequency modulator. At the beginnig, all analog pulse signal modulation techniques are described, which are preceded by a general introduction of modulation. The pulse frequency modulation (PFM) method with integration is emphasized. Depending on the sign of IPFM, the characteristics and mathematical description of unipolar and bipolar IPFM are given in this paper. At the end of theoretical part, adaptive techniques are described and their application in the analog domain to a given modulator. By a simulation in the Matlab software package, block diagrams of ideal and adaptive IPFM models are shown as well as description of their waveforms at the output of integrator and modulator depending on characteristics of the input signal