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    Procédé de linéarisation d’un signal de transmission et circuit intégré correspondant
    4.
    发明专利
    Procédé de linéarisation d’un signal de transmission et circuit intégré correspondant 未知

    公开(公告)号：FR3115179A1

    公开(公告)日：2022-04-15

    申请号：FR2010321

    申请日：2020-10-09

    Applicant: ST MICROELECTRONICS SRL

    Inventor： PALLOTTA ANDREA

    IPC: H04W80/00 ,  H04L25/00 ,  H04L27/00

    Abstract: Un procédé pour linéariser un signal de transmission (RF_TX) résultant d’une modulation d’amplitude en quadrature (QAM mod) d’un signal en bande de base analogique (BB_TX) et une amplification en radiofréquence (RFPA), comprend une démodulation (QAM demod) d’un signal de rétroaction provenant du signal de transmission (RF_TX), une comparaison (COMP) entre le signal de rétroaction démodulé (BB_FB) et le signal en bande de base (BB_TX), un calcul numérique (DPD_CU) d’un signal de commande de prédistorsion (PD_CT) basé sur la comparaison, et une prédistorsion analogique (APD) du signal en bande de base analogique (BB_TX) commandée par le signal de commande de prédistorsion (PD_CT). Figure de l’abrégé : Figure 1

    6.
    发明专利
    未知

    公开(公告)号：ITUB20154230A1

    公开(公告)日：2017-04-08

    申请号：ITUB20154230

    申请日：2015-10-08

    Applicant: ST MICROELECTRONICS SRL

    Inventor： IOTTI LORENZO ,  MAZZANTI ANDREA ,  PALLOTTA ANDREA ,  SVELTO FRANCESCO

    IPC: H03B5/12

    Abstract: An oscillator has an oscillator output emitting an oscillating signal. The oscillator includes oscillator cores which each have a same circuit topology. A set of configuration switches couple a selected number of oscillator cores in parallel to generate the oscillating signal. The oscillator cores are arranged with a symmetry around a central axis. The planar inductors of the oscillator cores are arranged in a petal-like pattern with the planar inductors forming the petals of the petal-like pattern. The selected coupling of the oscillator cores in made in response to a selected phase noise threshold of a modulation device which receives the oscillating signal.

    8.
    发明专利
    未知

    公开(公告)号：ITUB20155245A1

    公开(公告)日：2017-04-23

    申请号：ITUB20155245

    申请日：2015-10-23

    Applicant: ST MICROELECTRONICS SRL

    Inventor： PALLOTTA ANDREA

    IPC: H03F3/26 ,  H03F3/19 ,  H03F3/21 ,  H03F3/45

    Abstract: A push-pull amplifier includes a pair of active devices driving the primary side of a double distributed active transformer (DDAT). The primary side of the DDAT includes a cascaded arrangement of primary windings of a first set of transformers with the active devices coupled ends of cascaded arrangement of primary windings. The secondary side of the DDAT includes a cascaded arrangement of secondary windings of a second set of transformers coupled to a load. Secondary windings of the first set of transformers drive inputs of respective active stages. Outputs of the active stages drive respective primary windings of the second set of transformers.

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