A Low-Cost Cross-Correlation Residual Phase Noise Measurement System & Efficient Digital Signal Processing Techniques

This paper describes a residual phase noise measurement system using cross-correlation techniques that is built from relatively low-cost and readily available components and exhibits a system noise floor of around -177 dBc/Hz when measuring a device operating at 0 dBm output power. A software library for the digital signal processing of residual noise measurements has also been produced, which will be provided open-source.