Broadband electromagnetic response self-adaptive determination method and system of integrated circuit

Abstract

The invention relates to a broadband electromagnetic response self-adaptive determination method and system of an integrated circuit. The method comprises the following steps: acquiring a to-be-simulated frequency band range of an integrated circuit, and setting a plurality of uniformly distributed initial frequency points according to the frequency band range; calculating the electromagnetic response of the initial frequency point by using a coarse particle parallel method, and determining a first electromagnetic response sequence and a second electromagnetic response sequence; performing interpolation on the first electromagnetic response sequence and the second electromagnetic response sequence based on a cubic spline interpolation method to obtain a first cubic spline interpolation curve and a second cubic spline interpolation curve, and determining a difference curve; determining a discrete frequency point set according to the peak value of the difference curve and the peak valueof the first cubic spline interpolation curve; and determining the electromagnetic response of each discrete frequency point in the discrete frequency point set by using a coarse particle parallel method. The electromagnetic response of the integrated circuit can be accurately calculated by using a small number of sampling frequency points, so that the calculation time cost is reduced.

Description

technical field [0001] The invention relates to the field of integrated circuit design, in particular to a method and system for self-adaptive determination of wide-band electromagnetic response of integrated circuits. Background technique [0002] For the ultra-broadband electromagnetic field calculation problem of multi-layer VLSI, the frequency range that needs to be calculated includes a wide frequency range from several kHz to several GHz. As the minimum feature size of multi-layer VLSI is reduced to the nanometer level, integrated circuits The operating frequency reaches several GHz, and the crosstalk, voltage drop, signal delay, noise and other problems caused by parasitic effects between layers, vias, interconnections, etc. are becoming more and more serious. It is very necessary to analyze the electromagnetic response in a wide frequency band. Due to the multi-scale structure of multi-layer VLSI with a minimum feature size of nanometers and a maximum size of centim...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method and system for adaptively determining the wide-band electromagnetic response of integrated circuits, so as to solve the problem that the number of sampling points for frequency cannot reach thousands when using traditional methods such as uniform frequency point sampling to calculate the electromagnetic response of integrated circuits. A problem that leads to low calculation accuracy and high calculation time cost

Images