The invention relates to a broadband high power amplifier that comprises a signal input adapted to receive an input signal, at least one amplifier stage adapted to amplify the received input signal, a signal output adapted to output the signal amplified by the at least one amplifier stage as an output signal, a monitoring unit adapted to monitor signal characteristics of the input signal and the output signal and a control unit adapted to operate the at least one amplifier stage at an optimal operating point depending on the current signal characteristics monitored by said monitoring unit.

A system includes: 1) a buffer circuit; 2) circuitry coupled to an input of the buffer circuit; 3) a load coupled to an output of the buffer circuit; and 4) a clamp circuit coupled between an input of the buffer circuit and the output of the buffer circuit. The clamp circuit includes: 1) a bipolar junction transistor (BJT); 2) a first resistor with a first end coupled to a base terminal of the BJT and with a second end coupled to a collector terminal of the BJT; and 3) a second resistor with a first end coupled to the collector terminal of the BJT and with a second end coupled to the input of the buffer circuit. The second resistor is between an output of the circuitry and the input of the buffer circuit.

The invention relates to a broadband high power amplifier that comprises a signal input adapted to receive an input signal, at least one amplifier stage adapted to amplify the received input signal, a signal output adapted to output the signal amplified by the at least one amplifier stage as an output signal, a monitoring unit adapted to monitor signal characteristics of the input signal and the output signal and a control unit adapted to operate the at least one amplifier stage at an optimal operating point depending on the current signal characteristics monitored by said monitoring unit.