High Power Amplifier Modeling for TWTAs and SSPAs

This paper examines the complex modeling process for high power amplifiers, focusing specifically on Traveling Wave Tube Amplifiers (TWTAs) and Solid-State Power Amplifiers (SSPAs). The modeling approach requires deep analysis of the amplifiers' physical characteristics, electronic components, and underlying circuitry. The study explores various modeling methodologies, including both linear and nonlinear techniques. Implementation often involves mathematical representations using polynomial functions or lookup tables, with key parameters like AM/AM and AM/PM conversions being critical for accurate modeling. The research underscores the necessity for precision in amplifier modeling, as minor inaccuracies can substantially affect system performance. Applications discussed include telecommunications systems, radar technology, and satellite communication networks, where proper amplifier modeling ensures signal integrity and system efficiency. This work provides a comprehensive foundation for high power amplifier modeling, offering valuable implementation insights for engineers and researchers in the field.