Linearizers are electronic circuits which improve the non-linear behaviour of amplifiers to increase efficiency and maximum output power. Creating circuits with the inverted behaviour to the amplifier is one way to implement this concept. These circuits counteract the non-linearities of the amplifier and minimize the distortion of the signal. This increases linear operating range up to the saturation (maximum output power) of the amplifier. Linearized amplifiers have a significantly higher efficiency with improved signal quality. There are different concepts to linearize an amplifier, including pre- and post-distortion and feedback linearization. Most commonly used is pre-distortion linearization.
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