Patent ID: 8400223

Claim:
An amplifier arrangement with an amplifier arrangement input and an amplifier arrangement output, the amplifier arrangement comprising a first transistor and a first ballast resistance, wherein the first ballast resistance connects a first transistor base of the first transistor to a common base terminal at least one second transistor and at least one second ballast resistance, wherein the at least one second ballast resistance connects a second transistor base of the at least second transistor to the common base terminal; and a feedback device comprising a direct current operational amplifier having reference input connected to a reference voltage and a feedback input terminal for sensing at least a base voltage of the first transistor, a first feedback resistance connecting the first transistor base of the first transistor to the feedback device input terminal, at least one second feedback resistance connecting the second base of the at least one second transistor to the feedback device input terminal and the direct current operational amplifier further comprising a feedback output terminal that is connected to the common base terminal.