Multiport Network S-parameter Restoration and Calibration with 2-port Network Analyzer

• Published in: 2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) pp. 1 - 3
• Main Authors: Chen, Yin, You, Fei, Ma, Mingming, Guo, Haoye, Wang, Yu, Li, Jiachao, Wu, Tao, Qian, Ting, He, Songbai
• Format: Conference Proceeding
• Language: English
• Published: IEEE 12-08-2022
• Subjects: Calibration; Couplers; Microwave integrated circuits; Microwave technology; Millimeter wave technology; Network analyzers; Smoothing methods
• DOI: 10.1109/ICMMT55580.2022.10023247

In this paper, a multiport network S-parameter restoration and calibration procedure is proposed. Taking advantages of the analysis method for multiport network with arbitrary loads in S-parameter domain, the procedure involves no additional standard calibration kit but only a 2-port vector network analyzer (VNA) and a few arbitrary loads. Going through all 2-port combinations for measurement and leaving the remaining ports to be loaded with arbitrary terminations, S-parameters of an N-port device under test (DUT) are reconstructed by no more than N!/(2!(N-2)!) times of measurement. This procedure does not complicate experiment operation and instead decreases cost of multiport measurement. Results of this procedure is compared with standard \boldsymbol{50 \ \Omega} matching calibration for verification.