Optimization for multiport VNA vector error correction

Multiport vector error correction leverages the techniques that apply to two-port error correction. In some testset configurations the load match at any particular port may take on multiple distinct values that must be characterized. As the number of ports increases it becomes important to find ways to minimize the number of connections required to calibrate the VNA. This paper presents techniques for optimizing the calibration both from the point of view of minimizing the number of calibration steps as well as utilizing TRL, Unknown Thru and QSOLT calibration without requiring dual reflectometers at each testport.