Stmicroelectronics(tours) Sas

Stmicroelectronics (rousset) Sas

Stmicroelectronics (grenoble 2) Sas

Benoît Bonnet

François Dupont

Sylvain Charley

The invention relates to an antenna comprising: an elongate conducting band; an antenna socket; a connection to earth; at least one first capacitive element of adjustable capacitance; and at least one first inductive element in series with the first capacitive element.

Antenna for mobile communication device

A directional dual distributed coupler including: a first conductive line between first and second ports, intended to convey a signal to be transmitted in a first frequency band; a second conductive line coupled to the first one; a third conductive line between third and fourth ports, intended to convey a signal to be transmitted in a greater frequency band than the first one; a fourth conductive line coupled to the third one; and at least one diplexer connecting, on the side of the second and fourth ports, the respective ends of the second and fourth lines to a fifth port.

Selectivity of a dual coupler

A method and a device for determining the amplitude and the phase of an impedance connected on a transmission line, including a bidirectional coupler having a first line interposed on the transmission line and having a second line providing at its respective ends two measurement signals, and a balun having its respective differential-mode inputs receiving data representative of the measurement signals.

Detection of the value of an impedance of a radiofrequency system

A method and circuit for evaluating a charge impedance at the output of a directional coupling having a first line adapted to convey a desired signal between a first terminal and a second terminal adapted to be connected to an antenna, and having a second line coupled to the first one including a third terminal on the side of the first terminal and a fourth terminal on the side of the second terminal, wherein the signal present on the fourth terminal is submitted to a homodyne detector having its local oscillator signal sampled from the third terminal.

Evaluation of a charge impedance at the output of a directional coupler

An integrated electronic radio-frequency transceiver circuit, including: at least one terminal intended to receive a signal to be transmitted or to transmit a received signal; at least one planar antenna, with a settable resonance frequency; at least one bidirectional coupler having a primary line interposed between the terminal and the antenna and having the respective terminals of a secondary line providing data representative of the transmitted power and of the power reflected on the primary line side; at least one detector of the transmitted power and of the reflected power; and a circuit for selecting the resonance frequency of the antenna according to the ratio between the transmitted power and the reflected power.

Growing community of inventors

Tours, France

Benoît Bonnet