SUMMARY
A vector network analyzer (VNA) obtains phase information primarily through the use of an IQ demodulator, which calculates phase from the in-phase (I) and quadrature (Q) components of the signal. In both SFCW (Stepped Frequency Continuous Wave) and FMCW (Frequency Modulated Continuous Wave) modes, the measurement of phase is straightforward with a saturated mixer. However, achieving accurate phase measurements presents more complexity due to various factors affecting precision.
PREREQUISITES
- Understanding of vector network analyzers (VNAs)
- Knowledge of IQ demodulation techniques
- Familiarity with SFCW and FMCW measurement modes
- Basic principles of phase measurement using mixers
NEXT STEPS
- Research the operation principles of vector network analyzers (VNAs)
- Study IQ demodulation in detail
- Explore the differences between SFCW and FMCW measurement techniques
- Learn about the design and function of saturated mixers in phase measurement
USEFUL FOR
Engineers and technicians working with RF and microwave measurements, researchers in signal processing, and anyone involved in the design and application of vector network analyzers.