Abstract: Three techniques for the analysis of phase distortion produced by linear filtering of angle modulated carriers were examined and compared to determine their accuracy, reliability, and ease of implementation by computer programs and using the Fast Fourier Transform. Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Modulation and Demodulation of RF Signals by Baseband Processing" by Jorge Antonio. Cruz-Emeric, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.