Here is a YouTube video about Quadrature Mixers IQ Demodulation and the Tayloe Detector, and is part of a growing collection of videos I have found to be useful. The reason is theory and application of the Dan Tayloe detector for modern SDRs and understanding science related to software defined radio.
This tutorial, "Quadrature Mixers IQ Demodulation and the Tayloe Detector" is free education you can watch, which will help you deepen your knowledge and be better prepared for licence exams, schoolwork, or operating radio equipment.