Behavioral modeling and simulation of RE LNA with VHDL-AMS

High-level RF design based on behaviorally described models allows the evaluation of the performance of the architecture and system at an early stage. It also serves as the top-down design methodology in a familiar circuit design environment. VHDL-AMS supports the time and frequency domain modeling and noise modeling which make the RF circuit and system modeling in VHDL-AMS possible. In this paper we represent a methodology to design and optimize RF LNA in VHDL-AMS to get a RF LNA model with flexible specification input and high fidelity to noise and nonlinearity issues. Some of the challenges encountered in the behavioral modeling and simulation of RF LNA will be discussed. Typical RF LNA characteristics, such as noise figure and nonlinearity are addressed.