Patent ID: 8847685

Claim:
A push-pull amplifier, comprising: an amplifier input; a push amplifier stage comprising a first adjustable impedance matching circuit and two transistors of a first transistor type arranged in series such that an output contact of the first transistor of the first transistor type and an input contact of the second transistor of the first transistor type are coupled to each other via a first common node; a pull amplifier stage comprising a second adjustable impedance matching circuit and two transistors of a second transistor type arranged in series such that an output contact of the first transistor of the second transistor type and an input contact of the second transistor of the second transistor type are coupled to each other via a second common node; and an inverting amplifier output; wherein the respective first transistors of the push amplifier stage and of the pull amplifier stage have control contacts thereof coupled to the amplifier input, wherein the respective adjustable impedance matching circuits have a first side thereof coupled to the amplifier input and a second side thereof coupled to the respective common nodes of the push amplifier stage and of the pull amplifier stage, and wherein the second transistors of the push amplifier stage and the second transistor of the pull amplifier stage have output contacts thereof coupled to each other and to the inverting amplifier output.