Power control circuit

A power control circuit comprising:

• a power amplifier for power amplifying a transmission signal to obtain an output signal;
• control circuit means for controlling a level of the output signal output by said power amplifier;
• a limiter for partially limiting an amplitude of the output signal from said power amplifier in order to obtain a limited signal;
• a phase compensation circuit having a constant gain and to which the output signal form said power amplifier is supplied, said phase compensation circuit outputting a compensated signal, the level of the compensated signal from said phase compensation circuit being proportionate to the level of the output signal from said power amplifier, the phase of the compensation signal from said phase compensation circuit being the same as that of the limited signal from said limiter;
• a multiplication circuit for multiplying the limited signal from said limiter and the compensated signal from said phase compensation circuit in order to acquire a multiplied signal;
• a low-pass filter for extracting a direct current component of the multiplied signal from said multiplication circuit;
• and
• a comparison circuit for comparing the direct current component from said low-pass filter with a reference voltage in order to obtain a comparison output;
• wherein the comparison output from said comparison circuit is supplied to said control circuit means;
• and
• wherein said control circuit means controls the level of the output signal from said power amplifier so that the direct current component from said low-pass filter will become equal to said reference voltage.