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Frequently Asked Questions
This section helps our customers understand Load Pull and Noise Measurements! As such, we’ve put together a selection of typical Questions and Answers.
We are updating this section as new applications and instruments appear and we will be happy to receive your questions and answer them.
This section is divided in two, Basic questions and Advanced questions:
Basic questions deal with the fundamental issues of measuring in a non-50 Ohm environment.
Advanced questions are all others, dealing with matters of general or particular interest.
Useful Formulas and a set of Graphs are also available.
Basic
Advanced
“Hot-Cold” (Y-Factor) Noise Measurement Method
Input Power Calibration for avoiding input Isolator
Tuner Power Handling Limitations
Contacting versus Non-contacting Tuner Probes (Slugs)
The TRL Calibration Method
Tuner Repeatability is affected by VNA Jitter
Comparing Contacting and Non-Contacting RF probes (Slugs)
Hybrid Harmonic L/P and wideband tuners
Why do Triplexers cause spurious Oscillations
Attention with Isolators
Electronic and Mechanical Tuners
Active Load Pull: Strength & Weaknesses
Measure Zin (DUT) using a passive Load Pull System
Power Added Efficiency
Limitations and Recommendations in Noise Measurements
Limitations of a Load Pull System
How do we Interpolate between Impedance points?
What is Tuner Loss?
What are Impedance Errors in Multitone (Intermod) Measurements?
