Abstract: An amplifier circuit is disclosed comprising: an input terminal configured to receive a radio frequency input signal; an output terminal configured to provide a radio frequency output signal; a first transistor having a first collector, a first emitter, and a first base; a second transistor having a second collector, a second emitter, and a second base; a bypass switch; and a controller. The first base is connected to the input terminal and the second emitter. The first collector is connected to a circuit voltage supply and the output terminal The first emitter is connected to ground and to the second base. The second collector is connected to a collector voltage supply. The bypass switch is connected between the first base and the output terminal.