A Linearized Mixer Model for Reducing the Complexity of System-Level Analysis

This paper introduces an approach to the behavioral modeling of the frequency dependent conversion mechanism in a RF/microwave mixers operating in its linear region. The core of the model consists of the conversion matrix of the nonlinear circuit under investigation, which represents its linearization around the large-signal state. This approach allows for a straightforward implementation in computer aided design (CAD) using the conversion matrix that is constructed from either simulation or measurements: the former is considered in this paper. We illustrate the technique by implementing this model in commercial CAD software, for the investigation of a micromixer cell suitable for UWB applications. Analysis and discussion about the computational effort reduction are reported