Characterization and modeling of nonlinearity in double-balanced mixers

A behavioral model describing the nonlinearity of a double-balanced mixer is presented. The analysis of a mixer is based on the diode I-V characteristics. A double frequency test method is used to extract the behavioral of the mixer. This method can measure the main channel and all spurious response. The measurement is carried out in a commercial mixer, and the results show that the method can extract the nonlinear behavioral of the mixer.