General spice equivalent circuit simulation system and method

Abstract

The invention discloses a general simulation program with integrated circuit emphasis (SPICE) equivalent circuit simulation system and a general SPICE equivalent circuit simulation method. The system comprises a data reading module, a matrix conversion module, a parameter selection module and an equivalent circuit generating module, wherein the data reading module is used for reading a data file of a Tabular W-element format from storage equipment and acquiring an RLGC transmission line matrix from the data file by using an internal difference algorithm; the matrix conversion module is used for converting the transmission line matrix into an ABCD parameter matrix and converting the ABCD parameter matrix into an S parameter matrix; the parameter selection module is used for selecting an S parameter frequency range by using the internal difference algorithm and selecting a pole-residue number required by a vector fitting algorithm; and the equivalent circuit generating module is used for executing the vector fitting algorithm based on the pole-residue number to generate a rational number function matrix corresponding to the S parameter matrix and generating a corresponding equivalent circuit according to the rational number function matrix. By implementing the system and the method, the data file of the Tabular W-element format is imported into the simulation equivalent circuit under simulation software of an SPICE format.

Description

technical field [0001] The invention relates to a circuit simulation system and method, in particular to a general SPICE equivalent circuit simulation system and method. Background technique [0002] Microstrip and stripline structure transmission lines in packages and printed circuit board (Printed Circuit Board, PCB) channels, through field effect solving (Filed Solver) software, such as Q3D software from Ansoft or Hspice from Synopsys The software can output frequency dependent resistance, inductance, reactance, capacitance (Frequency dependent RLGC) models to represent equivalent transmission line effects. Second, to address model causality and accuracy issues, such as transmission line skin effects and dielectric losses. In the circuit simulation process, the SISTAI developed by Intel can be used for model conversion, and the above problems can be solved by extracting the frequency-dependent RLGC model. Among them, the model output format uses the Synopsys company's s...

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Problems solved by technology

Among them, the model output format uses the Synopsys company's standardized table W-element grammar (TabularW-element) standard, which cannot accept this type of format for general circuit simulation software such as Cadence's Pspice software, Sigrity's SPDSIM software, and SIMetrix's Simplis software. Makes the use of the Tabular W-element model limited

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