Compact behavioral description for generalized loads using a modified DC X-parameter model

A modified DC X-parameter model is presented. The model gives much better accuracy than a basic 50 Ω DC X-model. Compared with a full load-pull DC X-model, the presented model not only greatly decreases the model's file-size, but also provides comparably good accuracy. The optimization of the model is also presented, and based on this method both the model extraction time and the file-size are further improved.