Simulating Digital Pre-Distortion
Duration: 54 minutes
Available On Demand
Summary
Power amplifiers with high Peak-to-Average Ratio (PAR) signals can create non-linearity problems. When a high power signal is applied to the PA input, the PA can't always linearly amplify the signal, resulting in a situation leading to gain saturation and distortion. Digital Pre-distortion (DPD) technology is widely used to compensate for the non-linear behaviour of power amplifiers. We will show in a PathWave Advanced Design System (ADS) example the latest digital pre-distortion simulation capabilities and techniques.
Key learnings:
- Simulating a power amplifier to examine its nonlinear behaviour.
- Applying various digital pre-distortion techniques.
Speakers
Andy Howard
Senior Applications Engineer
Keysight Technologies
Andy Howard, Senior Applications Engineer, has been with Keysight since 1985. He graduated from U.C. Berkeley, B.S. E.E., 1983, and M.S. E.E., 1985. He was a visiting researcher for one year in Japan while a graduate student, and is fluent in Japanese. He has published more than 20 magazine articles, HP or Agilent seminar papers, and application notes. He has created hundreds of ADS examples, and is currently focused primarily on various power amplifier simulations (load pull, envelope tracking, optimisations, etc.) He has also worked on several switched-mode power supply simulations.