This paper introduces the thought of combining the real frequency method and the direct optimization method,proposes a fast and effective comprehensive method to construct wideband matching network by utilizing a simple CAD tool——Smith Chart.

Based on the principal of direct modal perturbation method,a simplified semi-analytical technique for the modal characteristics of the short shear wall with small openings was developed.

Fuzzy cluster includes these algorithms,such as the transmitting closure,dynamic direct cluster,and maximum tree,and the operation times of dynamic direct cluster algorithm is the least.