Scattering parameter calculation method

A technology of scattering parameters and calculation methods, applied in the direction of CAD circuit design, etc., to improve the calculation efficiency, avoid the accumulation of numerical errors, and avoid the conversion process.

Pending Publication Date: 2021-02-26
SHENZHEN HUADA EMPYREAN TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

There is also a method to directly calculate the S-parameters, but this method only gives the calculation method of the S-parameters for the same reference impedance

Method used

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Embodiment Construction

[0026] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0027] figure 1 For the flow chart of the calculation method of scattering parameters according to the present invention, reference will be made below figure 1 , the method for calculating the scattering parameters of the present invention is described in detail.

[0028] First, in step 101, AC analysis is performed on the original multi-port network.

[0029] Preferably, a frequency is set, and the admittance matrix of AC analysis (alternating current analysis) is calculated.

[0030] In this embodiment, the scattering parameters are directly calculated based on the results of AC analysis and reference impedances at different ports. Suppose the circuit has n por...

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Abstract

The invention discloses a scattering parameter calculation method, which comprises the steps of calculating an admittance matrix of a circuit network based on AC alternating current analysis accordingto a set frequency; calculating the response voltage of each port one by one according to a given alternating current excitation signal; and calculating a circuit scattering parameter according to the admittance matrix and the response voltage of the port. According to the scattering parameter calculation method, scattering parameter calculation of different reference impedances can be processed,and the calculation efficiency is greatly improved for large-scale circuits, especially for multi-port circuits.

Description

technical field [0001] The invention relates to the technical field of Integrated Circuit / Computer Aided Design (Integrated Circuit / Computer Aided Design), in particular to a method for quickly and accurately solving scattering parameters in circuit simulation. Background technique [0002] Scattering parameters are used to simulate the behavior of electronic circuits at different frequencies, and the circuit can be described as a black box. Scattering parameter analysis (also referred to as S-parameter analysis for short) is an analysis type of the spice simulator, the purpose is to linearize the circuit near the DC operating point, and to equate the original circuit into an equivalent circuit containing N ports , and output the S-parameter values ​​at each discrete frequency point. [0003] In the prior art, Y parameters are commonly used to obtain S parameters through a series of matrix transformations. This method can intuitively obtain the admittance coefficient matrix...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/31
CPCG06F30/31
Inventor 程明厚杨晓东陶雄周振亚吴大可滕飞
Owner SHENZHEN HUADA EMPYREAN TECH CO LTD
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