@article{10902/29777,
year = {2023},
month = {6},
url = {https://hdl.handle.net/10902/29777},
abstract = {This paper presents two linearization strategies for a custom-designed wideband push-pull (PP) power amplifier (PA) for wired communication applications such as, for example, cable TV. Two digital predistortion (DPD) behavioral models are proposed to meet the in-band and out-of-band linearity requirements when efficiently amplifying wideband DOCSIS signals with high fractional bandwidth (FBW). A radiofrequency (RF) DPD linearizer based on a band-pass generalized memory polynomial (BP-GMP) behavioral model and a baseband (BB) I-Q DPD linearizer based on a harmonic distortion GMP (HD-GMP) behavioral model are proposed. Both DPD models take into account the harmonic distortion typical of high FBW amplification. Experimental results will show high efficient and linear amplification of a 4×192 MHz composite DOCSIS signal by properly combining a crest factor reduction (CFR) technique and the proposed DPD strategies.},
organization = {This work was supported in part by the Huawei Technologies and in part by MCIN/AEI/10.13039/50110001103 under Project PID2020-113832RB-C21},
publisher = {Institute of Electrical and Electronics Engineers Inc.},
publisher = {IEEE Transactions on Broadcasting, 2023, 69(2), 516-527},
title = {Digital predistortion linearization of a GaN HEMT push-pull power amplifier for cable applications with high fractional bandwidth},
author = {Gilabert Pinal, Pere Lluis and Pérez Cisneros, José Ramón and Ren, Zhixiong and Montoro López, Gabriel and Ruiz Lavín, María de las Nieves and García García, José Ángel},
}