Stmicroelectronics (alps) Sas

Stmicroelectronics S.a.

Stmicroelectronics Razvoj Polprevodnikov D.o.o.

Stmicroelectronics (grenoble 2) Sas

Bruno Leduc

Pascal Bernon

Stephane Clin

Kosta Kovacic

Anton Stern

Christophe Grundrich

A method for controlling a signal envelope shape of modulation pulses in a driver of a wireless transmitter includes supplying a first voltage to the driver during a non-modulated state, supplying a second voltage configurable by a configurable modulation index value to the driver during a modulated state, switching between the non-modulated state and the modulated state comprising setting the modulation index value to configure the second voltage level at the same level as the first voltage and then switching between supplying the first voltage to the driver and supplying the second voltage to the driver, and filtering to a limited bandwidth the variations of the second voltage resulting from configuring the modulation index value.

Device and method for a wireless transmitter

A circuit includes, in series between a first terminal and a second terminal of application of a power supply voltage, and first and second branches. The first branch includes a first transistor and a first current source coupled to the first transistor. The second branch includes a resistive element, a second transistor coupled to the resistive element and forming a current mirror with the first transistor and a second current source coupled to the second transistor. The resistive element conditions a threshold of detection of a variation of the power supply voltage.

Detection of disturbances of a power supply

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Voiron, France

Bruno Leduc