A controlled, saturated high frequency power amplifier, which can be used especially as a transmitting amplifier in a T/R module for a phase-controlled (radar) antenna for the X-band (8 GHz to 12 GHz). In this case, a portion of the HF output signal is utilized to generate a control signal, with which the output power is controlled nearly without loss via at least one gate connection for the HF power amplifier components, preferably, field effect transistors, that are components of the power amplifier. The power amplifier thus has a high degree of transmitting effectiveness, even with a pulsed transmitting operation.