High Speed Tuner Characterization
(Swept-Adaptive Characterization)
Traditional tuner characterization involved characterizing tuners on a frequency by frequency basis, therefore a n-frequency tuner characterization took n times longer than a single-frequency characterization. Swept-adaptive tuner characterization involves an advanced probe-position selection which gives full Smith Chart coverage at all frequencies. In this manner, the tuner moves to each physical position only once, and the s-parameters are swept over all frequencies. A n-frequency characterization is only slightly longer than a single-frequency characterization (due to the VNA sweep time). For example, a 600-point tuner characterization on a PNA took 11 minutes for 1 frequency, and 12 minutes for 5 frequencies (can be extended to hundreds of frequencies).