Power amplification module

A power amplification module comprising:

• an amplification transistor that has a constant power supply voltage supplied to a collector of the amplification transistor, that has a bias current supplied to a base of the amplification transistor and that amplifies an input signal input to the base of the amplification transistor and outputs an amplified signal from the collector of the amplification transistor;
• a first current source that outputs a first current that corresponds to a level control voltage that controls a signal level of the amplified signal;
• and
• a bias transistor that has the first current supplied to a collector of the bias transistor, a bias control voltage connected to a base of the bias transistor and that outputs the bias current from an emitter of the bias transistor.