Method and system for determining low-frequency reference frequency point of integrated circuit full-wave electromagnetic simulation

Abstract

This application discloses a method and system for determining the low-frequency reference frequency point of integrated circuit full-wave electromagnetic simulation. The method first obtains the critical frequency point of the full-wave electromagnetic simulation of the integrated circuit, and then calculates the critical frequency point based on the dielectric loss type of the integrated circuit. field solution, and then calculate the relative error based on the dielectric loss type and the field solution, and finally based on the size relationship between the relative error and the preset error threshold lower limit and error threshold upper limit and based on the lower limit and upper limit of the iteration frequency, The reference frequency point is calculated in an iterative manner. This method can calculate the reference frequency point and the field solution under the reference frequency point by iterative method based on the critical frequency point, so that the electromagnetic field simulation field solution at which frequency is obtained must be accurate, and it is necessary for the subsequent calculation of the real field solution at low frequencies. Field solution support makes it possible to completely solve the failure problem of existing solvers in the low frequency case for integrated circuits.

Description

Method and system for determining low-frequency reference frequency point of integrated circuit full-wave electromagnetic simulation technical field The application relates to the technical field of electromagnetic simulation, particularly to the low-frequency reference frequency point determination of integrated circuit full-wave electromagnetic simulation. methods and systems. Background technique [0002] VLSI has an obvious multi-scale structure, and its scale ranges from centimeter-level (10-2m) to nanometers. level (10‑9m), with a scale range of up to 7 orders of magnitude. On the other hand, the signals transmitted by integrated circuits often have full-wave transmission characteristics. characteristics, its transmission frequency range covers from DC to several GHz, this problem should be used in integrated circuits for digital and mixed-signal transmission Especially in use. Therefore, the electromagnetic field analysis for integrated circuits requires full-...

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Problems solved by technology

At the critical frequency point and below the frequency, the result obtained by the solution must be inaccurate, that is to say, at this time, under the current calculation accuracy, the electromagnetic field distribution of the integrated circuit cannot be accurately calculated using any sparse matrix solver

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