A linear amplification with nonlinear components (LINC) power transmitter
is provided. The LINC power transmitter includes a digital signal
processing unit which controls the LINC power transmitter; a frequency
modulation unit which modulates or converts a digital signal output from
the digital signal processing unit into a radio-frequency (RF) signal; a
signal amplification unit which amplifies the RF signal output from the
frequency modulation unit using a gain amplifier and a power
amplification module; and a direct current/direct current (DC/DC)
conversion unit which controls bias of the power amplification module.
Here, the DC/DC conversion unit controls a base bias and/or a collect
bias of the power amplification module, and the power amplification
module operates in saturation.