Evaluation of a multi-line de-embedding technique for millimeter-wave CMOS circuit design

Abstract

This paper presents the evaluation of a pad model which is made by using L-2L de-embedding method. The coplanar waveguide transmission line (CPWTL) is used to evaluate the de-embedding method. The pad circuit model is set up after obtaining the results of de-embedding. Two comparisons are carried out to accomplish the evaluation of the pad circuit model. The calculation error in quality factor of transmission line is less than 6% in experimental result. Employing the model to de-embed other DUTs, the process becomes simple and chip area can be saved.