For anyone interested in a fundamentals class on phase noise, I'm
teaching an online class with live instruction (including video
recordings in case you miss a class) titled "Phase Noise Fundamentals."
https://www.jitterlabs.com/support/training/phasenoiseclass
Register with the coupon code TIMENUTS1704 to receive 10% off (coupon is
only valid for the April class).
If any questions, please call or message me at
https://www.jitterlabs.com/company/contact
Best regards,
Gary Giust
JitterLabs
-------- Class syllabus follows ----------
PART 1: BASIC CONCEPTS
Measures of Quality
Precision. Stability. Accuracy. Crystal oscillators. Drift. Allan
deviation. Time error. Time interval error (TIE). Wander. Phase Noise.
Phase Noise and Jitter
Digital versus RF. Phase noise versus jitter. Power-law model of phase
noise. Stability metrics. Sources of phase noise.
PART 2: ANALYSIS
Phasor representation. Effect of changing temperature, signal power, and
carrier frequency on phase noise. Leeson's equation. Amplifiers. Random
versus spurious phase noise. Spur-detection algorithms. Convert from
dBc/Hz to seconds RMS, and from dBc to seconds peak-peak. Compute phase
jitter from phase noise. Select the right offset-frequency range for
integration. Spur analysis. Determine dominant noise sources.
PART 3: MEASUREMENT
Spectrum analyzers. IF-filter resolution bandwidth. Phase noise
analyzers. Eliminating AM. Additive, multiplicative, and residual noise.
Phase-detector method. PLL with reference-source method. Cross
correlation to reduce instrument noise floor. Delay-line discriminator
method. Effect of power supply noise. Measuring differential signals.
Balun artifacts and how to minimize them. Measurement tradeoffs and best
practices.
PART 4: APPLICATIONS
Phase-locked Loops (PLLs)
Analog PLL operation and model. Transfer functions. Effect of bandwidth
on phase noise. Sources of spurious and random phase noise. Impact of
frequency division, and integer-N versus fractional-N architectures, on
phase noise.
SERDES Reference Clocks
Anatomy of a serial link. PLL jitter transfer. Receiver observed jitter
transfer. Reference-clock analysis. Converting phase noise into jitter
at a given BER.
RF Transceivers (QAM)
Role of LO phase noise in RF up/down conversion. I-Q modulation.
Constellation diagrams. I-Q demodulation. Phase errors. Phase noise
budgeting. Effect of phase noise on symbol error rate (SER), and error
vector magnitude (EVM). Testing.
Analog Data Converters (ADCs)
Operation. Aperture and phase jitter. Signal-to-noise ratio.
Offset-frequency range for integration. Effect of clock spurs.
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