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Designing High-Speed Interconnect Circuits-bYou can find two free tools, FastCap and FastHenry, on the web; they are nicely suited to some kinds of problems. FastCap calculates the capacitance of an assemblage of objects; FastHenry calculates the inductance. Both are useful in particular types of instances. FastCap is a multi-pole solver, a solver that uses a particular type of simplifying strategy. In an assemblage of objects, some nearby and some not so close, the response at any particular point is influenced by all objects, near and far. The impact of an object very near is likely greater than the impact of another that is far away. But the computational burden for calculating the impact of an object is the same whether it is near or far. The multi-pole algorithm takes on this dilemma and says: no, it is not. The multi-pole algo

关键词： Designing   High-Speed   Interconnect   Circuits-b