Under CopyrightHarasymiv, IhorIhorHarasymivJancke, RolandRolandJancke2022-03-111.8.20142012https://publica.fraunhofer.de/handle/publica/37656410.24406/publica-r-37656410.1109/SMACD.2012.6339448This article presents a short survey of existing baseband (BB) signal flow models of linear and nonlinear RF blocks for system-level (SL) time domain (TD) transient simulation using Spice-like simulators. Existing BB models of nonlinear PB amplifier are analyzed and a corrected version of a publicly available model is proposed. A new nonlinear BB model of a mixer based on multiple Fourier series is proposed and tested as Verilog-A model. In comparison to the pass band (PB) mixer model the proposed BB model allows a speedup of transient simulation about 2-3 orders of magnitude and saves also time for verification of RF sub-systems implemented later in top-down design process on transistor level.enpassband signalpassband modelbaseband signalbaseband modelbehavioral modelingVerilog-Aspice-like simulatortransient responsemixed-signal simulation621004conference paper