Method and device for determining space electromagnetic radiation of multilayer integrated circuit

Abstract

The invention provides a method and device for determining space electromagnetic radiation of a multilayer integrated circuit, and the method comprises the steps: obtaining an electric field expression, generated at a field point, of a point current source based on a field generated at any position by the point current source expressed by a union vector Green function; taking an electric field expression of the point current source at the field point as an integrated function of a two-dimensional Gaussian integral, dividing an integrated circuit layout with a complex shape into a polygon with a simple shape, and calculating the field generated by the current on the metal plate of the integrated circuit at the same position based on the linear superposition principle of the field; and calculating the fields generated by the current on the layout of the multilayer integrated circuit with the complex shape at different positions in the space, and determining the electromagnetic radiation of the multilayer integrated circuit to the space based on the linear superposition principle of the fields. According to the invention, the electromagnetic radiation generated by the integrated circuit with the multi-layer complex structure to the space is rapidly determined through a semi-analytical method based on the linear superposition principle of the vector Green function and the field.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a method and device for determining space electromagnetic radiation of multilayer integrated circuits. Background technique [0002] When the integrated circuit is working, due to the transmission of high-speed signals on its multi-layer layout, a high-frequency alternating electromagnetic field will be formed. These high-frequency alternating electromagnetic fields will form a high-frequency radiation source, causing crosstalk to other signal layers or other integrated circuits and chips. Therefore, it is necessary to accurately analyze the space electromagnetic radiation of multilayer integrated circuits, and then propose a rectification plan based on the analysis results. [0003] When traditional methods are used to calculate the space electromagnetic radiation of integrated circuits, the integrated circuit and the space to be studied are usually determined as the...

AI Technical Summary

Problems solved by technology

Since the method of moments only integrates for the interface, it will reduce a large number of grid units and unknown quantities. However, since the scale of integrated circuits ranges from nanometers to centimeters, directly solving the whole integrated circuit with the finite element method itself will cause problems. Huge sparse matrix, and due to the coupling of the finite element method and the method of moments, the formed coupling matrix is ​​a dense matrix at the interface, which greatly increases the number of non-zero elements of the entire sparse matrix and the complexity of the sparse matrix solution, making the calculation time still very long

Images