Nonlinear EMI simulation of an AM detector at the system level

A nonlinear detector simulation technique that can be used together with the discrete technique for a rapid radio receiver electromagnetic compatibility and electromagnetic interference (EMC/EMI) simulation up to the baseband signal processing path at the system level is proposed. The technique presented allows one to simulate an amplitude modulation (AM) detector in the large signal mode as well as in the small signal mode by taking into account the nonlinearity of the detector transfer characteristic. The technique was validated by making comparisons with measurements and PSPICE simulation data.