System-level time-domain behavioral baseband modeling of RF blocks for mixed-signal simulation

• Published in: 2012 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD) pp. 185 - 188
• Main Authors: Harasymiv, I., Jancke, R.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.09.2012
• Subjects: Analytical models; baseband signal and model; behavioral modeling; Integrated circuit modeling; Maximum likelihood detection; mixed-signal simulation; Mixers; Nonlinear filters; Numerical models; passband signal and model; Radio frequency; Spice-like simulators; transient response; Verilog-A
• ISBN: 9781467306850; 1467306851
• DOI: 10.1109/SMACD.2012.6339448

This 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.