| 摘要 |
The present invention aims to provide a RF amplifier capable of controlling the generation of spurious signals when plural carriers are simultaneously amplified. The RF amplifier includes dividers for respectively dividing each of a plurality of input signals different in frequency of carrier from one another into plural form, phase shifters for respectively assigning weights to phases every divided signals corresponding to a number obtained by subtracting 1 from the divided plural numbers, first combiners for adding up the signals different in the frequency of carrier, of the divided signals and the signals subjected to the phase weighting, amplifiers for respectively amplifying signals outputted from the first combiners, and a second combiner for adding the signals outputted from the amplifiers together to thereby output one signal from the second combiner. Spurious signal components are canceled out by addition of the output signals of the amplifiers.
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