Stmicroelectronics S.a.

Centre National De La Recherche Scientifique

Nathalie Deltimple

Didier Belot

Eric Kerherve

Yann Deval

Pierre Jarry

Nicolas Delaunay

The invention concerns a circuit for multi-standard wireless RF transmission comprising: input circuitry (to) for generating a transmission signal (I(t), Q(t)) based on an input data signal (I, Q); a power amplifier () adapted to amplify said transmission signal to provide an output signal (S(t)) for transmission via at least one antenna; and feedback circuitry (to) comprising at least one variable low-pass filter () for generating a feedback signal (I, Q) based on said output signal, wherein said input circuitry further comprises pre-distortion circuitry () adapted to modify said input data signal (I, Q) based on said feedback signal.

Multi-standard wireless transmitter

A reconfigurable power amplifier includes at least one amplification circuit (E, E), and a circuit () for controlling the amplification circuit so as to adapt its operation according to an applied input signal (RF). The circuit for controlling includes a circuit () for modifying the compression point of the amplification circuit and for adapting the gain of the amplification circuit in such a manner as to increase the power added efficiency of the circuit for the modified compression point.

Reconfigurable power amplifier and use of such amplifier for making a multi-standard amplification stage for mobile phone communications

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Pessac, France

Nathalie Deltimple