Most every wireless and wireline communication network, along with radar systems uses a digital modulation scheme that is susceptible to noise and jitter. Many systems still use a heterodyne architecture that converts the digital signal to a higher-frequency analog signal. This architecture relies on a mixer to create these higher frequencies. Noise from any component that reaches the mixer can be re-mixed and this reduces the sensitivity and selectivity of the entire system as re-mixed signals leak into adjacent channels. Phase noise is a big contributor to this potential issue.

This eBook provides an overview of phase noise mechanisms, causes and effects, along with insights into how to calculate, measure and design to minimize phase noise. The first article discusses the basics, along with how high-precision quartz oscillators benefit applications. The second article provides an analysis of the causal effects of phase noise in radar and satellite communications. Article three is an application note that provides a thorough analysis of how to measure two-port residual phase noise. The final two articles address design and testing challenges to minimize phase noise in millimeter wave components.

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