High frequency (HF) transmitters implemented with the multi-octave power amplifier (PA) are always faced problem of interfering harmonics because nonlinearity PA. In this paper, harmonic cancelation digital predistortion (HC-DPD) scheme is proposed and well discussed to cancel in-band intermodulation distortion (IMD) as out-of-band at same time. With filter-less scheme, bulky lossy filter banks...

This article presents a novel digital predistortion (DPD) approach to compensate for nonlinear dynamic distortions caused by the supply network of capacitive radio frequency digital-to-analog converters (RF-DACs). The developed DPD concept recreates voltage distortion on RF-DAC's and modulates input signal such that effects output RF-DAC are canceled. In contrast conventional approaches as prun...

Digital predistortion (DPD) is used to compensate for the distortion of power amplifiers (PAs). Inspired by physical structure PA circuit, a feedback in DPD model favored. In this letter, we proposed an infinite impulse response (IIR) modeling and linearization, modifying generalized memory polynomial (GMP) model. We also propose iterative identification algorithm estimate IIR-DPD coefficients....

This paper proposes a transfer learning neural network (TLNN) approach for digital predistortion (DPD) of mm-Wave active phased arrays (APA) operated under variable signal bandwidth regimes. Compared with the conventional artificial (ANN) method, proposed can achieve similar linearization performance much lower computational complexity by transferring part trained model from one to another band...

In this article, we propose a new behavioral modeling approach, called boosted model tree, to characterize and compensate for the complex nonlinear distortions induced by wideband high-efficiency radio frequency power amplifiers. With proposed model, input data are classified into different zones decision trees each zone is assigned separate submodels. We also employ boosting technique build mu...