Description: With the technology arrived in the area of deep sub-micron, interconnect coupling capacitance and inductance of the circuits are increasingly affected. In order to effectively capture the impact of the interconnection line, the need for accurate circuit-level simulation, however, automatically extracted from the territory of the interconnection line is usually a large linear circuit. Simulator to simulate the use of spice, usually relatively low efficiency. For linear circuit characteristics, it is usually reduced-order model to model, put forward a number of reduced-order model. This article will introduce the various types of reduced-order model, analysis of their principle, comparison of their advantages and disadvantages.
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