Abstract

Modal analysis of a multi-channel differential transmission line is discussed for estimation of far-end crosstalk. A simple formula to evaluate the far-end crosstalk was derived using eigenmode and mixed mode S parameter. The accuracy of the proposed formula was verified by comparison with a full wave simulation. The far-end crosstalk of test four-channel differential lines was calculated by the derived formula. These results were in good agreement with that obtained by full-wave simulation. In addition, position of the differential transmission line with low crosstalk was determined using the proposed method.

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