In this chapter, reflectometers enable measurements of power and reflection coefficient to be carried out simultaneously. Scalar reflectometers give only amplitude information. Vector reflectometers, on the other hand, measure complex quantities and display the reflection coefficient either in terms of modulus and phase or in terms of real and imaginary parts. Six-port reflectometers also measure complex quantities, but in these the phase information is deduced from ratios of amplitude readings rather than by the use of a phase meter or phase-sensitive detector.

Chapter Contents:

• 12.1 Untuned scalar reflectometers
• 12.2 Tuned scalar reflectometers
• 12.3 Vector reflectometers
• 12.4 Six-port reflectometers
• 12.5 Self-calibration methods
• 12.6 References

Inspec keywords: reflectometers; power meters; calibration; power measurement

Other keywords: complex quantity measurement; phase meter; power meter calibration; scalar reflectometer; vector reflectometer; six-port reflectometer; power measurement; phase-sensitive detector; reflection coefficient

Subjects: Electrical instruments and techniques