Accurate analysis and design of millimeter wave mixers

The present study is based on the method introduced by B. Shuppert (1986) for nonlinear analysis of mixers, but it differs in the linear part. In particular, the circuit characterization of the mixer harmonics is emphasized, removing the usual approximation of matched terminations and employing models that effectively represent network characteristics in the microwave and millimeter wave domain. This goal is achieved through the accurate knowledge of the various components used in the mixer and the use of accurate equivalent circuits. In order to validate the model, two subharmonic mixers operating at K-band (18-26 GHz) were realized. Reasonable agreement between theoretical and experimental results is achieved