Column Control DTX
Column Control DTX

How to Simulate Digital Pre-Distortion for Power Amplifier Design

Get quote
EDA Software
+ EDA Software
EDA Software
+ EDA Software

Simulating digital predistortion (DPD) for power amplifier design

Designing power amplifiers (PAs) for efficiency and bandwidth performance requires simulating their modulated performance using digital predistortion (DPD) at the circuit level. The simulation software must support compact waveform and advanced DPD models for broadband compression and memory effects to minimize distortion from running PAs in their non-linear regions. Integrating the DPD simulation solution into the design engineer's circuit design application removes the challenges of transitioning between platforms or manually configuring signal formats and DPD algorithms.

Inject a test signal into different DPD algorithms (such as memory polynomial, Volterra polynomial, and look-up table) to evaluate linearity improvements and optimize the DPD model's coefficient. Once optimized, validate key metrics like Adjacent Channel Leakage Ratio (ACLR) or error vector magnitude (EVM) to gauge the DPD's effectiveness. Iterative simulation across different operating conditions, signal bandwidths, and modulation formats is essential to capture all non-linearities and memory effects.

Column Control DTX
DPD simulation in ADS

DPD simulation solution for power amplifier design

Enhancing power amplifier designs for efficiency and bandwidth performance requires simulating digital predistortion early in the design phase. Keysight EDA Advanced Design System (ADS) provides a unified DPD simulation and circuit design platform. Compared with iterative build-simulate-test models, it accelerates simulation speed by 10 times while maintaining correct waveform characteristics. Keysight EDA software incorporates a unique dynamic gain model that can describe both linear dispersion and non-linear memory effects in Doherty PAs under broadband signals.
Get quote
Column Control DTX

See demo of DPD for power amplifier design simulation

Column Control DTX

Explore products in our power amplifier design simulation solution

Column Control DTX
Column Control DTX

Related use cases

How to Design Robust 5G Power Amplifiers for the Real World

How to Design Robust 5G Power Amplifiers for the Real World

Simulating 5G PA designs at the component and system levels with authentic modulation and high-fidelity behavioral models increases predictability, lowers risk, and shrinks schedules. Keysight ADS enables multi-technology layout and multi-domain analysis, evaluating the impacts of 5G PA design choices while delivering accurate results in a single virtual workspace.

Learn more keysight-arrow

How to Simulate an RF Circuit

How to Simulate an RF Circuit

RF circuit simulation requires EDA (electronic design automation) software for schematic entry, component modeling, signal analysis, and layout design. Learn the steps of using RF simulation to measure noise figures in a circuit with an amplifier and a bandpass filter.

Learn more keysight-arrow

How to Design Multi-Technology mmWave Phased Arrays

How to Design Multi-Technology mmWave Phased Arrays

Integrating 3D multi-technologies into mmWave phased array designs requires automating wafer-level assembly and packaging. Learn how EDA automation tools enable engineers to integrate different modules to 5G UEs without the need for design modification or updates.

Learn more keysight-arrow

Column Control DTX
contact us logo

Get in touch with one of our experts

Need help finding the right solution for you?

Contact us