Estimation of complex residual errors of calibrated two-port vector network analyzer

Abstract

This article presents a new method for verification of the residual errors of calibrated two-port vector network analyzers based on a special time-domain technique. The method requires two devices under test including a high-precision air line. Calibration residual errors are extracted from a distancefrequency system model and special estimation algorithm based on the quasi-optimal unscented Kalman filter. Experimental studies were conducted in coaxial measurement environments and at the wafer level. Suitable applications of the proposed verification method are discussed. Index Terms -S-parameters, vector network analyzer (VNA), verification, residual error-box, unscented Kalman filter (UKF).

A simple adaptive method of antenna frequency parameters measurements with local reflections

“…2 shows the set of samples for B (reference values B 1 , B 2 , B 3 , B 4 ) and all A (reference values A 1 , A 2 , A 3 , A 4 ) signals in the distance-frequency plane. A similar model is also used for VNA verification [2][3][4][5][6], and navigation signal generator calibration [7]. The components of z can be separated using Fourier analysis.…”