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US 2003/0125919 A1Published application
Circuit modeling using topologically equivalent models
AssigneeNEC Corporation
InventorShoichi Chikamichi
Life of this patent
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AssigneeNEC Corporation
InventorShoichi Chikamichi
Estimating the term…
A modeling method and a simulation method enable a circuit board to undergo modeling without deterioration of simulation precision while describing with no matrix shape. A circuit simulator analyzes power/ground noise of a circuit board with single current change source. A process regards the circuit board as an aggregate of thin doughnut boards of concentric circle shape with the current change source as the center, subsequently, approximating the aggregate of the doughnut boards to be an aggregate of rectangular boards with respective circumferences of the doughnut boards as widths and respective cut-lengths of the same as lengths, then forming respective transmission line models taking respective rectangular boards of the aggregate of the rectangular boards as the transmission line, thus connecting respective transmission line models in series to make it a simulation model of the circuit board.
A modeling method in which a simulation model of a circuit board with single current change source is formed when analyzing power/ground noise of the circuit board by a circuit simulator, comprising the processes of:
A modeling method in which a simulation model of a small area of circuit board having a current change source at a center is formed when analyzing power/ground noise of the small area of circuit board by a circuit simulator, comprising the processes of:
A simulating method in which a simulation model of a circuit board with one current change source is formed, and a simulation of power/ground noise of said circuit board is executed by a circuit simulator, comprising the processes of:
A simulating method in which a simulation model of a circuit board with one current change source is formed, and a simulation of power/ground noise of said circuit board is executed by a circuit simulator, comprising the processes of:
A simulating method in which a simulation model of a small area of circuit board having a current change source at a center is formed, and a simulation of power/ground noise of said small area of circuit board is executed by a circuit simulator, comprising the processes of:
A simulating method in which a simulation model of a small area of circuit board having a current change source at a center is formed, and a simulation of power/ground noise of said small area of circuit board is executed by a circuit simulator, comprising the processes of:
A storage medium storing a computer implemented program, said computer implemented program implementing the processes of:
A storage medium storing a computer implemented program, said computer implemented program implementing the processes of:
A storage medium storing a computer implemented program, said computer implemented program implementing the processes of:
A storage medium storing a computer implemented program, said computer implemented program implementing the processes of:
A storage medium storing a computer implemented program, said computer implemented program implementing the processes of:
A storage medium storing a computer implemented program, said computer implemented program implementing the processes of:
Dependencies are inferred from the claim text.