Phase locked loop amplifier for variable amplitude radio waves

An arrangement for generating an amplified modulated carrier signal the amplitude variations of which are smaller than the amplitude of the unmodulated carrier, characterized in that said arrangement comprises a first and a second controlled power oscillator, each having a control input and an output, and a control circuit connected to the respective control inputs of said first and second controlled power oscillators for making said oscillators oscillate at a substantially constant amplitude and at a frequency which substantially corresponds to the carrier frequency, the outputs of said oscillators being coupled to the control circuit for generating control signals for the oscillators from comparisons between the modulated carrier signal and the oscillator signals, the arrangement also comprising an output circuit connected to the outputs of the oscillators for vectorially assembling an output signal which is said amplified modulated carrier signal.