LAUSR

This paper presents a hybrid de-embedding method by combining the unitary condition of lossless networks and the impulse response curve truncation. A magnitude-symmetry formula is derived for reciprocal and low loss printed circuit board (PCB) fixtures. It gives the analytical relationship between S11 and S22 for asymmetric PCB fixtures. At the same time, the impulse response curve truncation is used to solve S11. Based on above two methods, the number of fixture’s unknown S-parameters is reduced. The reasonableness of the magnitude-symmetry formula is verified by simulated fixtures which are commonly used in radio frequency and microwave engineering measurements. The accuracy and feasibility of the proposed hybrid de-embedding method are also numerically and experimentally verified. Good S-parameters correlations of fixtures and devices under test (DUT) can be observed in all examples.