Abstract: The present invention relates to a Multi Carrier Power Amplifier, MPCA, comprising a number of parallel Multi Carrier Power Amplifiers, each comprising an amplification loop and an error cancellation loop, said amplification loop comprising at least a first gain and phase control network and a first amplifier and a second amplifier. The MPCA comprises an external loop comprising a second Spread Spectrum Signal added to said each first loop.

Abstract: The present invention relates to a Multi Carrier Power Amplifier, MPCA, comprising a number of parallel Multi Carrier Power Amplifiers, each comprising an amplification loop and an error cancellation loop, said amplification loop comprising at least a first gain and phase control network and a first amplifier and a second amplifier. The MPCA comprises an external loop comprising a second Spread Spectrum Signal added to said each first loop.

Abstract: The present invention relates to a power amplifier (400) and to a method of amplifying in the power amplifier (400) a first composite radio signal (RF41) that includes at least two modulated carrier waves. The first radio signal (RF41) is divided into two radio signals (RF42, RF43), which are amplified in a first and a second non-linear amplifier (405, 406). Intermodulation products arise in the amplification of said radio signals in respective amplifiers (405, 406). A compensation signal (RF45) is generated from the output signal (RF46) of the second amplifier (406), and the modulated carrier waves are suppressed selectively, e.g. by filtering out the carrier waves in band-stop filters (408-409). An output signal (RF47) from the power amplifier (400) is generated by reverse phase addition of the compensation signal (RF45) to the output signal (RF44) from the first amplifier (405).