Abstract: Disclosed is a method for producing a stage for amplifying the power of a variable envelope signal including at least one amplifier. For each amplifier, a form of ideal variation in average power POUTL is selected. For each value of each setting parameter and for each average input power value, a value of an optimisation criterion is calculated on the basis of the mathematical expectation of at least one optimisation parameter. An optimum value of each setting parameter is determined and the amplification stage is produced with a number of amplifiers in parallel determined on the basis of an average output power value and with, for each amplifier, matching circuits providing the optimum values of the setting parameters. The invention also relates to an amplification stage produced in this manner.

Abstract: A method and a device for predictive evaluation of intermodulation power in an electronic device in which a predictive function f makes it possible to evaluate in a predictive manner values of power of an intermodulation component produced by an intermodulation distortion of an input signal, characterized in that the predictive function f includes an odd part V obtained by multiplication of an odd function F and of a function G, obtained by composition of a positive real-valued even function g and of a function Q in the form of a real series including at least one term of degree q belonging to the non-integer reals.

Abstract: A process and a device for measuring intermodulation products by wave reflection on a non-linear object (20), including two electromagnetic sources (24, 25) of distinct focal points emitting fundamental components, and a receiver (28), the process includes a step in which the measuring device is in a configuration so that the receiver (28) produces a signal for a first composition of the enriched wave (23), and a second step in which the measuring device is in a second configuration so that the receiver (28) produces a measuring signal for a second composition of the enriched wave (23).

Abstract: Disclosed is a method for producing a stage for amplifying the power of a variable envelope signal including at least one amplifier. For each amplifier, a form of ideal variation in average power POUTL is selected. For each value of each setting parameter and for each average input power value, a value of an optimisation criterion is calculated on the basis of the mathematical expectation of at least one optimisation parameter. An optimum value of each setting parameter is determined and the amplification stage is produced with a number of amplifiers in parallel determined on the basis of an average output power value and with, for each amplifier, matching circuits providing the optimum values of the setting parameters. The invention also relates to an amplification stage produced in this manner.

Abstract: A process and a device for measuring intermodulation products by wave reflection on a non-linear object (20), including two electromagnetic sources (24, 25) of distinct focal points emitting fundamental components, and a receiver (28), the process includes a step in which the measuring device is in a configuration so that the receiver (28) produces a signal for a first composition of the enriched wave (23), and a second step in which the measuring device is in a second configuration so that the receiver (28) produces a measuring signal for a second composition of the enriched wave (23).

Abstract: A method and a device for predictive evaluation of intermodulation power in an electronic device in which a predictive function f makes it possible to evaluate in a predictive manner values of power of an intermodulation component produced by an intermodulation distortion of an input signal, characterized in that the predictive function f includes an odd part V obtained by multiplication of an odd function F and of a function G, obtained by composition of a positive real-valued even function g and of a function Q in the form of a real series including at least one term of degree q belonging to the non-integer reals.

Abstract: A method of analyzing electrical stability of an active circuit splits a frequency response of an electrical or electronic circuit according to sub-bands (134, 136, 138) and in each sub-band (134, 136, 138) implements a step of determining an identification transfer function adapted for a stability analysis. The step of determining the transfer function is automatic and executed in the form of an identification loop, parameterized according to a current order of transfer function, and stopped when the norm of a phase error function for the error between the phase (222, 224, 226) of the current identified transfer function and that of the frequency response has exceeded a predetermined phase error threshold value.

Abstract: A method of analyzing electrical stability of an active circuit splits a frequency response of an electrical or electronic circuit according to sub-bands (134, 136, 138) and in each sub-band (134, 136, 138) implements a step of determining an identification transfer function adapted for a stability analysis. The step of determining the transfer function is automatic and executed in the form of an identification loop, parameterized according to a current order of transfer function, and stopped when the norm of a phase error function for the error between the phase (222, 224, 226) of the current identified transfer function and that of the frequency response has exceeded a predetermined phase error threshold value.