engineering
Understanding Phase Noise
What L(f) actually measures, why the offset frequency matters more than the headline number, and how phase noise relates to jitter.
Section
RF Engineering Guides
Reference guides to the parameters that decide a design, including phase noise, spurious content, insertion loss, VSWR, stability and settling time.
What each specification actually measures, how it is tested, and how it constrains the rest of the system.
Understanding phase noise is the first of those parameters, because it is the number that most often decides a source and the number most often quoted without its offset. Insertion loss, return loss, spurious content, settling time and frequency stability will join it here.
When the curve is being used to pick an architecture rather than to read a datasheet, go to YIG oscillator vs VCO vs DRO.