Additional phase shift amplitude error elimination circuit and phase shifter system

The utility model discloses an additional phase shift amplitude error elimination circuit, which comprises an amplitude attenuation circuit, and the amplitude attenuation circuit carries out different attenuation on input signals in different phase shift states according to amplitude attenuation codes, so that the amplitudes of all output signals are the same; the utility model discloses a phase shifter system, comprising a digital control circuit which stores a control code and a corresponding relation file of a phase shifter control code and an amplitude attenuation code and is used for outputting the phase shifter control code to a phase shifter circuit and outputting the amplitude attenuation code to an additional phase shift amplitude error elimination circuit according to the control code; the phase shifter circuit is used for performing phase shifting on the input signal according to the phase shifter control code to obtain input signals in different phase shifting states; and the additional phase shif