A new digital predistortion technique for analog beamforming systems

Chan Won Park, Eui Rim Jeong, Ji Hoon Kim

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


A digital predistortion (DPD) technique to linearize multiple power amplifiers (PAs) in analog beamforming systems is proposed. The analog beamforming system considered in this paper has one digital chain and multiple PAs/antennas controlled by phase shifters. Due to the system configuration, a single DPD should linearize the multiple PAs. To design the DPD, this paper introduces a cost function, squares of the sum of errors for all the PAs.The DPD solution minimizing the cost function is found by a recursive least squares (RLS) algorithm. Experimental results with commercial PAs show that the proposed DPD can effectively linearize multiple PAs.

Original languageEnglish
Article number20150998
JournalIEICE Electronics Express
Issue number2
StatePublished - 7 Jan 2016

Bibliographical note

Publisher Copyright:
© IEICE 2016


  • Analog beamforming
  • Digital predistortion
  • Memory polynomial
  • Nonlinear distortion
  • Power amplifier


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