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Mixed-Mode Chain Scattering Parameters: Theory and Verification

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2 Author(s)
Erkens, H. ; RWTH Aachen Univ., Aachen ; Heuermann, H.

Chain scattering parameters or T-parameters are a useful tool for calculating cascaded two-ports. With the increasing importance of mixed-mode S-parameters, a need for converting the T-parameters from their unbalanced form into a balanced form emerges for suiting both common and differential mode waves, as well as the mode conversion. This paper presents the derivation of the equations for transformations between mixed-mode S- and T-parameters for a mixed-mode two-port. Although derived in a way very similar to monomode T-parameters, no simplifications were necessary. Measurement results exemplify the quality of the T-parameter transformation under real-life conditions.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:55 ,  Issue: 8 )