Digital PreDistortion (DPD) is a high performance linearization technology for enhancing the power efficiency of RF power amplifiers. 

FlexDPD is a complete, adaptive digital predistortion sub-system that is customisable and independent of the target device vendor hence it can be built for any FPGA/SoC or ASIC platform.

Advantages are:

  • Vendor independent: compiled for your preferred FPGA or silicon vendor.
  • Scalable: resource optimisation for bandwidth, performance and multiple antennae/MIMO.
  • Affordable: licensing terms to suit your business and roadmap.
  • Supported: your success with FlexDPD is our core business.
  • Accessible: an evaluation platform is available, contact us for details.

It is supplied with:

  • Comprehensive documentation.
  • Integration support tools.
  • Support from highly experienced radio systems engineers.



Technically advanced, our FlexDPD linearization technology offers the following benefits:

  • Improves efficiency by enabling amplifier operation in its non-linear region.
  • Amplifier distortion reductions of > 45 dB have been attained.
  • Enables multi-carrier operation.
  • Automatic compensation for power amplifier memory effect.
  • Automatic compensation for Tx or observation path AQM imperfections.
  • Adapts to changing amplifier characteristics with age and temperature.
  • Agnostic to transistor technology (e.g. LDMOS, GaAs, GaN) and amplifier topology (e.g. class A/B, Doherty).
  • Agnostic to the communications standard: works with multi-carrier FDD, TDD, 2/3/4/5G, DVB-T, BGAN, DVB-S2X and many others.
  • Low target resource footprint.
  • Compatible with technologies such as Crest Factor Reduction (CFR) and envelope tracking.

For more details download our FlexDPD Overview, or contact us to chat about how FlexDPD can be used in your system.


The following clip illustrates Systems4Silicon's DPD achieving better than -70 dBc ACPR for a 100W APCO P25 Phase2 system.