| 摘要 |
<p>This amplification circuit has: a first filter (301) to which amplitude information of an input signal is input, upon which filtering is performed so that gain of a higher frequency component than a first cutoff frequency becomes greater than gain of a lower frequency component than the first cutoff frequency; a power supply circuit (102) which has low-pass filter characteristics with which gain of a lower frequency component than a second cutoff frequency is greater than gain of a higher frequency component than the second cutoff frequency, and to which amplitude information output from the first filter is input so that a power supply voltage corresponding to the amplitude information output from the first filter is generated; and an amplifier (104) which receives supply of the power supply voltage generated by the power supply circuit so as to amplify a signal based on the input signal.</p> |
