A system and method of calibrating an amplifier are presented. The amplifier has a first amplification path and a second amplification path. An attenuation of the first amplification path is set to a first attenuation value and an attenuation of the second amplification path is set to the first attenuation value. A first phase shift of the first amplification path and a second phase shift of the second amplification path that meets a first performance criteria is determined. A phase shift of the first amplification path is set to the first phase shift and a phase shift of the second amplification path is set to the second phase shift. A first attenuation of the first amplification path and a second attenuation of the second amplification path that meets a second performance criteria is determined.