A feedforward linearization system comprising: a circuit configured to receive an input signal and generate an output signal comprising a first error signal; a combination circuit configured to derive an error signal from a reference input signal and the output signal of the circuit; an amplifier circuit configured to compensate the first error signal in the output signal provided at an output of the circuit, wherein the amplifier circuit comprises: an output transmission line connected between the output of the circuit and an output port; and an amplifier comprising multiple sub-amplifiers (221, 222, 223, 224) configured to amplify the error signal into compensation signals; wherein inputs of the multiple sub-amplifiers (221, 222, 223, 224) are coupled to an input transmission line at different places with a distance between the different places along the input transmission line configured to receive the error signal derived by the combination circuit, wherein the distance between the different places along the input transmission line is a quarter wavelength at a center frequency of operating frequency band of the circuit; and outputs of the multiple sub-amplifiers (221, 222, 223, 224) are coupled to the output transmission line at different places with a distance between the different places along the output transmission line and configured to inject the compensation signals to the output port, wherein the distance between the different places along the output transmission line is the quarter wavelength at the center frequency of the operating frequency band of the circuit. a circuit configured to receive an input signal and generate an output signal comprising a first error signal; a combination circuit configured to derive an error signal from a reference input signal and the output signal of the circuit; an amplifier circuit configured to compensate the first error signal in the output signal provided at an output of the circuit, wherein the amplifier circuit comprises: an output transmission line connected between the output of the circuit and an output port; and an amplifier comprising multiple sub-amplifiers (221, 222, 223, 224) configured to amplify the error signal into compensation signals; wherein inputs of the multiple sub-amplifiers (221, 222, 223, 224) are coupled to an input transmission line at different places with a distance between the different places along the input transmission line configured to receive the error signal derived by the combination circuit, wherein the distance between the different places along the input transmission line is a quarter wavelength at a center frequency of operating frequency band of the circuit; and outputs of the multiple sub-amplifiers (221, 222, 223, 224) are coupled to the output transmission line at different places with a distance between the different places along the output transmission line and configured to inject the compensation signals to the output port, wherein the distance between the different places along the output transmission line is the quarter wavelength at the center frequency of the operating frequency band of the circuit. an output transmission line connected between the output of the circuit and an output port; and an amplifier comprising multiple sub-amplifiers (221, 222, 223, 224) configured to amplify the error signal into compensation signals; wherein inputs of the multiple sub-amplifiers (221, 222, 223, 224) are coupled to an input transmission line at different places with a distance between the different places along the input transmission line configured to receive the error signal derived by the combination circuit, wherein the distance between the different places along the input transmission line is a quarter wavelength at a center frequency of operating frequency band of the circuit; and outputs of the multiple sub-amplifiers (221, 222, 223, 224) are coupled to the output transmission line at different places with a distance between the different places along the output transmission line and configured to inject the compensation signals to the output port, wherein the distance between the different places along the output transmission line is the quarter wavelength at the center frequency of the operating frequency band of the circuit.