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Progress In Electromagnetics Research Letters
ISSN: 1937-6480
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A CALIBRATION PROCEDURE FOR TWO-PORT VNA WITH THREE MEASUREMENT CHANNELS BASED ON T-MATRIX

By W. Zhao, H.-B. Qin, and L. Qiang

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Abstract:
A simplified calibration procedure using T-matrix concept is presented for two-port vector network analyzer (VNA) with three measurement channels. Compared with Short-Open-Load-Thru (SOLT) calibration method based on 10-term error model where 10 error terms must be solved and saved at each frequency, the proposed method need define fewer characteristic variables. Moreover, a length-unknown 50Ω line can be used instead of a random single-port standard, for example, substituting Load standard with 50Ω line in SOLT calibration procedure. Via the simplified calibration procedure, the scattering parameters of a two-port device under test (DUT) can be finally obtained. Experimental verification is carried out, and good agreement is observed.

Citation:
W. Zhao, H.-B. Qin, and L. Qiang, "A Calibration Procedure for Two-Port VNA with Three Measurement Channels Based on T-Matrix," Progress In Electromagnetics Research Letters, Vol. 29, 35-42, 2012.
doi:10.2528/PIERL11112102

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