Patent ID: 11863148
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 6:
7. A calibration method for the active load pull tuner of claim 1 at a multitude of M≥100 states of the digital electronic tuner and a multitude N>1 of frequencies Fi with 1≤i≤N, comprising the following steps:
a) connect a RF&DC port of a bias network to a first port of a slide screw tuner and terminate a RF port of the bias network with Zo;
b) connect a DC port of the bias network with the test port of the active load pull tuner;
c) connect a second port of the slide screw tuner to a pre-calibrated vector network analyzer (VNA);
d) in a control loop of j states, with j=1, 2, 3 . . . M, of the digital electronic tuner, execute nested frequency sweeps of the N frequencies Fi, measure a total of M×N reflection factors Γ(j, Fi) as a function of the M states of the digital electronic tuner and the N frequencies and save in a tuner calibration file.