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Bruce's: Phase Noise Measurement

TBC..

REFERENCES

1. Extending the Range and Accuracy of Phase Noise Measurements
2. Accurate Measurement of Spectral Density of Phase Noise in Devices
3. Design Considerations in State-of-the-Art Signal Processing and Phase Noise Measurement Systems
4. Wenzel: Measuring Phase Noise
5. Wenzel BP_1000 Phase noise Measurement set Manual
6. W band AM/PM noise measurement system
7. Precision Phase Noise Metrology

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Phase Detectors

A double balanced mixer employing Schottky diodes with an IF response extending to dc is the usual choice for low noise systems

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Spectrum Analysers

For frequency offsets in the range [20Hz, 20kHz] a PC sound card can be used as the spectrum analyser. A stereo card even allows cross correlation techniques to be employed to reduce the system noise floor.

For frequency offsets below 20Hz a dc coupled analyser is useful. Either an ADC card with suitable software or an actual spectrum analyser can be used.

For frequency offsets greater than 20kHz, either a spectrum analyser or a wide bandwidth high resolution ADC can be used (with suitable software).

REFERENCES