volume | PIER Journals

2012-01-13

A Calibration Procedure for Two-Port VNA with Three Measurement Channels Based on T-Matrix

Wei Zhao,

Dr. Wei Zhao

Xidian University

China

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Hong-Bo Qin,

Dr. Hong-Bo Qin

Xidian University

China

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Li Qiang

Dr. Li Qiang

School of Mechatronics Engineering

Xidian University

China

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Progress In Electromagnetics Research Letters, Vol. 29, 35-42, 2012

doi:10.2528/PIERL11112102

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

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Wei Zhao, Hong-Bo Qin, and Li 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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