公开(公告)号：US20190356271A1

公开(公告)日：2019-11-21

申请号：US15983287

申请日：2018-05-18

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Flavia Amorosa ,  Serge Ramet ,  Daniel Subiela

IPC: H03F1/02 ,  H03F3/45 ,  H03F3/19 ,  H04B1/10 ,  H04L27/14

Abstract: In an embodiment, a differential amplifier includes: an input stage; an output stage coupled to the input stage, the output stage having first and second output terminals; and a feedback circuit coupled to the output stage, where the feedback circuit is configured to dynamically adjust a bias current of the output stage based on voltages of the first and second output terminals.

公开(公告)号：US10396736B2

公开(公告)日：2019-08-27

申请号：US15609736

申请日：2017-05-31

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Michel Ayraud ,  Serge Ramet ,  Serge Pontarollo

IPC: H03F3/04 ,  H03G3/30 ,  H01P1/22 ,  H03F1/56 ,  H03F3/191

Abstract: The transmission device comprising a transmit stage configured to deliver a transmission signal on an input-output node of an antenna and comprising a power transistor coupled to the input-output node and configured to amplify a signal to be transmitted. The device comprises a receive stage configured to receive a reception signal on the input-output node and comprising an attenuator circuit configured to attenuate the reception signal. The attenuator circuit comprising the power transistor and a control circuit able to place the power transistor in a triode mode.