HIGH FREQUENCY AMPLIFIER AND AMPLIFYING ELEMENT

摘要

PROBLEM TO BE SOLVED: To allow even a small scale hardware of a high frequency amplifier to flexibly cope with diversified frequency allocation with respect to the high frequency amplifier that amplifies a multi-carrier signal generated resulting from individually modulating a plurality of carriers and from synthesizing them. SOLUTION: The high frequency amplifier is provided with an amplifier means 11 that amplifies a multi-carrier signal generated resulting from individually modulating a plurality of carriers and from synthesizing them and with a filter means 12 that is placed at a post-stage of the amplifier means 11, terminates output terminals of the amplifier means 11, has a block band in an occupied band of the multi-carrier signal, and has its pass band with frequencies equal to any frequency intervalΔf on a frequency base of a plurality of carriers according to a transfer characteristic where a level of noises generated as a modulation product of the frequencies equal to the intervalΔf and modulation products of the multi-carrier signals is a prescribed upper limit or below.