Category:  Load Pull

Symptoms / Solutions:

The following are the differences between a scalar and vector load pull system:

  1. Compared with scalar load pull, vector load pull allows the measurement of additional parameters:
  • input large signal impedances of the DUT,
  • the input delivered power,
  • AM-PM,
  • the real added efficiency,
  • the absolute load tuner Gamma, thus not relying on mechanical tuner repeatability.
  1. The measurement speed of vector load pull is faster.
  2. A vector load pull system can be easily upgraded to an active load pull system increasing the tuning range.
  3. The vector load pull system can include a phase reference module, allowing the plotting of the real dynamic load lines.
  4. During the vector LP measurement, a VNA must be dedicated to the measurement system.


Keywords: Scalar, Vector, load pull, differences

Last date modified:  Jan-09-2018

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