Patent ID: 11867736
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 5:
6. An interpolation method between calibrated data points for the automated load pull tuner as in claim 5 at a frequency F, comprising:
a) retrieve s-parameters Sij(X1,X2) of the calibrated data points from the tuner calibration data file TUNER-CAL(F);
b) define a target position with tuning probe coordinates (X1.t,X2.t);
c) identify, using a numeric search through the s-parameters retrieved in step (a), two pairs of successive calibration data points, one pair of successive X1 positions (X1.1 and X1.2) with X1.1≤X1.t≤X1.2, and one pair of successive X2 positions, (X2.1 and X2.2) with X2.1≤X2.t≤X2.2, which are closest to X1.t and X2.t correspondingly;
d) execute a first set of linear interpolations of s-parameters Sij including one interpolation of X1.t between the X1 successive positions (X1.1 and X1.2) and one interpolation of X2.t between the X2 successive positions (X2.1 and X2.2) yielding interpolated s-parameters Sij(A) and Sij(B);
e) execute a second set of linear interpolations of s-parameters Sij(X1,X2) including one interpolation of X1.t and X2.t between the positions X1.1 and X2.1 and one interpolation of X1.t and X2.t between the positions (X1.2 and X2.2) yielding interpolated s-parameters Sij(C) and Sij(D);
f) calculate Sij parameters at target point (X1.t,X2.t) as an average of a third set of linear interpolations of X1.t and X2.t between the s-parameters Sij(A) and Sij(B) and linear interpolations of X1.t and X2.t between the s-parameters Sij(C) and Sij(D).