Linearization of RF Power Amplifiers - connecting simulation and measurements on physical devices

Linearization of RF Power Amplifiers - connecting simulation and measurements on physical devices

Presented by Giorgia Zucchelli, Markus Lörner and Dr. Florian Ramian

This webinar is intended for engineers who design and test RF power amplifiers, concentrating of possible amplifier efficiency improvements by adopting dedicated topologies and linearization. We will be introducing the need for, and the benefits of, linearization and digital predistortion (DPD). By reference to a basic RF power amplifier and a Gallium Nitride (GaN) device we will be discussing the advantages of combining simulation and real measurements to investigate memory polynomial DPD. You will learn how you can implement a faster and more accurate design process for an efficient RF front end. Using proper modelling ensures a high correlation between simulation and real measurements for amplifier behavior and linearization, speeding up development and optimization of amplifier capabilities. We will show how to predict amplifier behavior with different linearization techniques and optimize DPD for an RF power amplifier. Comparison with real world behavior provides objective analysis of both simulation and DPD approaches. Practical modelling and measurement examples with non-linear devices will be illustrating this webinar.


Markus Loerner is a marketing expert at Rohde & Schwarz focusing on the RF & microwave component market. He joined Rohde & Schwarz in 2000 and worked as a signal generator product manager in various RF applications from mobile wireless to satellite communications, for both R&D and production use. He holds a degree in electrical engineering from the University Erlangen-Nuremberg, Germany.

Markus Loerner

Dr. Florian Ramian is a development engineer for signal and spectrum analyzers at Rohde & Schwarz. He has 20 years of experience as an RF engineer, including 15 years in test and measurement. He held several positions as an Application Engineer at Rohde & Schwarz, before moving into development. While completing his doctorate at the Technical University of Munich (Germany) he was engaged in automotive radar development projects.

Dr. Florian Ramian