A 71% Relative Bandwidth Differential Integrated Power Amplifier With Optimized PAEmax for 5G-NR FR1 Carrier Aggregation Applications

QUEHEILLE, Remi; DE MATOS, Magalie; DEVAL, Yann; KERHERVE, Eric; RIVET, Francois; DELTIMPLE, Nathalie; FELLMANN, Maxandre

doi:10.1109/tcsii.2025.3567701

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QUEHEILLE, Remi
Laboratoire de l'intégration, du matériau au système [IMS]
Institut Polytechnique de Bordeaux [Bordeaux INP]

DE MATOS, Magalie
Laboratoire de l'intégration, du matériau au système [IMS]

DEVAL, Yann
Laboratoire de l'intégration, du matériau au système [IMS]

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Ce document a été publié dans

IEEE Transactions on Circuits and Systems II: Express Briefs. 2025-05-07p. 1-1

Résumé en anglais

This paper proposes a wideband Power Amplifier (PA) integrated in 28nm FD-SOI CMOS technology dedicated to sub-6 GHz 5G with controlled PAEmax based on a variable harmonic load across its operating bandwidth. The PA achieves a gain between 31 and 34 dB, a Psat from 20.5 to 22 dBm in the operating bandwidth from 2.9 to 6.1 GHz. Thanks to the PAE control, a PAEmax between 27 and 35% is achieved along the entire operating bandwidth. Modulated 5G-NR FR1 signal measurements are performed with a Walsh-based DPD using an intra-band carrier aggregation scenario to showcase the PA robustness for contiguous carriers. For the first time to the best author’s knowledge, PAEmax control is demonstrated over a relative bandwidth of 71%.< Réduire

Mots clés en anglais

Power amplifiers

PAE control

Wideband

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