Patent ID: 8830008

Claim:
A generator of a modulated radiofrequency signal, comprising: means for generating a first sinewave signal phase-shifted by a first variable value relative to a phase reference and a second sinewave signal phase-shifted by a given fixed nonzero value added to a second variable value relative to the phase reference, the second variable value being opposite to the first variable value relative to the phase reference, the first and the second variable values being representative of a modulation of the radiofrequency signal, the first and the second sinewave signals being of constant amplitude; a first fixed phase shifter configured to receive at its input the first and the second sinewave signals as pure sinewave signals, and configured to supply from a radiofrequency carrier with constant amplitude, a non-phase-shifted sinewave signal and a phase-shifted signal of the given fixed nonzero value; two amplifiers each amplifying one of the first and the second sinewave signals and operating at or close to respective saturation points; and a second fixed phase shifter with a value equal to the fixed nonzero value in order to the first and the second sinewave signals, the second fixed phase shifter coupling the first and the second sinewave signals originating from the two amplifiers in order to deliver the modulated radiofrequency signal.