Radar Signal Analysis With Oscilloscope Demodulation
Learn how oscilloscope demodulation and FFTs reveal radar pulse envelopes, Barker-coded phase modulation, chirp behavior, and frequency content.
Signal Integrity / Power Integrity
Foundational and advanced concepts for maintaining clean, reliable signals in high-speed designs. Covers measurement techniques, common pitfalls, and practical approaches to identifying and mitigating signal degradation in order to maintain signal integrity and power integrity in electrical designs.
40 articles
(Page 3)
Situational Awareness: RF Noise in the Lab
Understanding your lab’s RF background with spectral analysis and near-field probing helps separate real device emissions from environmental noise.
Near Field vs. Far Field Radiated Emissions
Near-field measurements capture all radiation components close to a device, but only dipole terms dominate far-field EMC compliance results.
Testing for Near Field Radiated Emissions in the Time Domain
Time-domain near-field probing reveals radiated emission signatures synchronized with switching currents, helping pinpoint return path discontinuities before EMC testing.
Unintentional Antennas in Electric Circuits
Small amounts of common current from ground bounce and return path gaps can turn ordinary interconnects into efficient radiating antennas.
Signal and Power Integrity Tutorial: Measuring Clock Jitter Sensitivity to Power Rail Noise, Pt. 2
By correlating filtered power rail variations with clock period tracking, you can quantify and verify a clock’s jitter sensitivity to supply noise.
Signal and Power Integrity Tutorial: Measuring Clock Jitter Sensitivity to Power Rail Noise, Part 1
By injecting a controlled power rail perturbation and tracking clock period variation, you can quantify a clock’s sensitivity to supply noise.
Eliminating DC Resistively Coupled Noise: A Signal and Power Integrity Tutorial
While split ground planes can reduce low-frequency resistive cross talk, differential signal routing provides a more robust and lower-risk solution.
Inductively Coupled Noise and Resistively Coupled Noise: A Signal and Power Integrity Tutorial
Understanding how return currents create inductive switching noise and low-frequency resistive crosstalk is essential to designing low-noise ground planes.
Build Your Own Low-Cost Power Rail Probe
A simple 50-ohm source series termination enables accurate, low-cost power rail measurements without the reflections caused by direct coax connections.
Transmission Lines for Oscilloscope Users, Part 2
Understanding instantaneous impedance and reflection coefficients explains why transmission line discontinuities distort oscilloscope measurements.
Transmission Lines for Oscilloscope Users, Part 4
When a low-impedance source drives an unmatched transmission line, alternating reflections can mimic ringing and distort oscilloscope measurements.
Transmission Lines for Oscilloscope Users, Part 3
Understanding Thevenin source impedance and oscilloscope termination reveals why reflections distort rise time measurements in unmatched transmission line setups.