This paper presents a novel approach to measure intermodulation distortion by using vector non-linear techniques. For non-linear and multi-port measurement it is necessary to extend the vector network analyzer with a phase reference and an addition test set to measure intermodulation reflection measurement. This system allows users to accurately determine the magnitude and phase of non-linear scattering parameters such as harmonic products of non-linear devices. The accuracy of the vector intermodulation reflection measurements is verified by various measurements presented in this paper. View full abstract»