GPSDO Architecture Explained: How GPS Disciplined Oscillators Achieve Nanosecond Timing Introduction GPS Disciplined Oscillators (GPSDOs) are essential in various applications that require precise and stable time and frequency references. These oscillators use signals from the Global Positioning System (GPS) to discipline their internal oscillators, ensuring that they maintain a high degree of accuracy and stability over extended periods. This article delves into the fundamentals of GPSDOs, thei