A Time-Variant Analysis of Passive Resistive Mixers Using Thevenin Theorem

Passive resistive mixers find applications in many modern RF and mm-wave circuits, from telecommunications to radar and automotive systems. This paper presents an equivalent Thevenin circuit for the analysis of the gain and bandwidth of the passive resistive mixer, that takes into account the source resistance and a finite off-resistance of the switches. This model is applied to practical use cases and validated against simulations.