Diode-connected transistor mixer analysis based on a linearized parametric model

The current paper is a follow-up to the researches that deals with the frequency mixers analysis by the analytical method of nodal equations. The study considers the analysis of mixers, which circuit implementation includes diode-connected transistors (specifically balanced mixer, double balanced mixer and triple balanced mixer). Analysis of mixer characteristics such as conversion gain, port isolation (RF-IF and LO-IF), and mismatch effects are presented. A mixers parametric optimization using the criteria of conversion gain maximization is carried out. The results of analytical calculations and simulations in Cadence Design Systems are presented.