An amplification device (4) comprising a predistortion loop (7), said predistortion loop (7) including:
• a predistortion module (8), adapted to provide a predistorded output signal (10) from a received input signal (5A),
• a power amplifier (14), comprising at least one semiconductor electronic component, and
• means (16) for filtering the predistorded output signal (10), said means (16) being connected between the predistortion module (8) and the power amplifier (14) and being adapted to provide a filtered signal (35) to the power amplifier (14), said means (16) being configured to increase the rise time of any peak signal whose initial rise time is less than or equal to a predefined time value, said peak signal being contained in the predistorded output signal (10), and to provide the resulting peak signal within the filtered signal (35) so as to protect the or each semiconductor electronic component, said resulting peak signal having a rise time greater than said predefined time value.
A particular example of peak signals whose initial rise time is less than or equal to a predefined time value of 10 ns are spikes. The amplification device (4) according to this invention notably intends to protect the power amplifier (14) from the harmful effects of such spikes.