公开(公告)号：FR2936115B1

公开(公告)日：2010-10-01

申请号：FR0856298

申请日：2008-09-18

Applicant: ST MICROELECTRONICS SA

Inventor： DANELON VALERIE ,  GARCIA PATRICE

IPC: H03D7/14 ,  H04B1/26

公开(公告)号：FR2936115A1

公开(公告)日：2010-03-19

申请号：FR0856298

申请日：2008-09-18

Applicant: ST MICROELECTRONICS SA

Inventor： DANELON VALERIE ,  GARCIA PATRICE

IPC: H03D7/14 ,  H04B1/26

Abstract: L'invention concerne un amplificateur-mélangeur d'un signal radiofréquence comportant au moins un circuit amplificateur (2) et un circuit mélangeur (3) pour amplifier un signal appliqué sur au moins une borne d'entrée (IN) et transposer une première fréquence de ce signal vers une deuxième fréquence inférieure, dans lequel une contre-réaction (7) est commutée à la deuxième fréquence.

公开(公告)号：FR2823031B1

公开(公告)日：2003-07-04

申请号：FR0104102

申请日：2001-03-27

Applicant: ST MICROELECTRONICS SA

Inventor： GARCIA PATRICE ,  BELOT DIDIER

IPC: H03G3/10 ,  H03G1/00 ,  H04B1/40 ,  H04M1/00 ,  H04M1/725 ,  H03G3/30 ,  H04Q7/20

Abstract: The amplifier has an amplification unit (Q1), a configurable load circuit (M1,M2) having an inductive element (L2) and capable of presenting two different configurations having respectively, two different impedance values, and a controllable switch unit (Q2,Q3) connected between the amplification unit and the load circuit for selecting one or the other of the two configurations of the load circuit. The load circuit has two load transistors with insulated field grid effect (M1,M2), connected in series and functioning as a triode, the inductive element being connected in parallel on the pair of load transistors between a feed terminal and the switching circuit.

公开(公告)号：FR2781948B1

公开(公告)日：2001-02-09

申请号：FR9809800

申请日：1998-07-28

Applicant: ST MICROELECTRONICS SA

Inventor： MIQUEL REGIS ,  GARCIA PATRICE

IPC: H03D3/00 ,  H03D7/16 ,  H04B1/30 ,  H04B1/16 ,  G01S3/28

Abstract: The present invention relates to a frequency conversion receiver at low intermediary frequency including a first analog mixer of a received signal with a signal coming from a local oscillator at a first conversion frequency and a second analog mixer of the incoming signal with the signal coming from the local oscillator out of phase by 90°. The receiver further includes, on the digital side, circuitry for detecting a possible phase difference and a possible gain difference between the signals of the two paths, the first conversion frequency corresponding to the central frequency of the received channel, plus half the channel frequency band.