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Electromagnetic coupling time domain modeling analysis method of space electromagnetic field action bifurcation line

A technology of electromagnetic coupling and analysis method, which is applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem that the bifurcation line time domain modeling field cannot be coordinated, and achieves solving the electromagnetic coupling modeling problem, The effect of efficient transmission

Active Publication Date: 2021-03-16
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an efficient time-domain algorithm for field-line coupling, which can quickly simulate and Analysis of Electromagnetic Interference Problems of Bifurcated Lines Acted by Spatial Electromagnetic Fields

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  • Electromagnetic coupling time domain modeling analysis method of space electromagnetic field action bifurcation line
  • Electromagnetic coupling time domain modeling analysis method of space electromagnetic field action bifurcation line
  • Electromagnetic coupling time domain modeling analysis method of space electromagnetic field action bifurcation line

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Embodiment Construction

[0024] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] In this embodiment, the electromagnetic coupling of bifurcated lines composed of five transmission lines acting on the space electromagnetic field is taken as an example for illustration.

[0026] The electromagnetic coupling model of the bifurcated line acting on the space electromagnetic field is as follows: figure 2 As shown, including ground plane 1, first transmission line 2, second transmission line 3, third transmission line 4, bifurcation node 5, loads 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, incident wave 16. The dimension of the ground plate 1 is L c ×W c . The length of the first transmission line 2 is l 1 . The projection length of the second transmission line 3 and the third transmission line 4 in the direction of the first transmission line 2 is l 2 , the angles between the wiring direction and the dir...

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Abstract

The invention provides an electromagnetic coupling time domain modeling analysis method for a space electromagnetic field action bifurcation line, which comprises the following steps: firstly, decomposing the bifurcated line into a cascade network structure of a plurality of sections of independent multi-conductor transmission lines and bifurcated nodes according to bifurcated nodes; then, combining a transmission line equation with an interpolation technology, building an electromagnetic coupling model corresponding to each section of multi-wire, using a central difference format of a time domain finite difference (FDTD) method to discretize the transmission line equation, and obtaining voltage and current responses on each section of multi-wire through iterative solution; and finally, extracting a Norton equivalent circuit of each section of multi-wire acting on the bifurcation node, obtaining voltage of each port of the bifurcation node in combination with a circuit analysis method,feeding back the voltage as an excitation source to each section of multi-wire as a boundary condition, and realizing interference signal transmission among each section of multi-wire. According to the invention, on the premise of avoiding direct modeling of the bifurcated line structure, field line coupling rapid co-simulation of the bifurcated line under the action of the space electromagneticfield is realized from the perspective of time domain.

Description

technical field [0001] The invention relates to an electromagnetic coupling time-domain modeling analysis method of a bifurcated line acting on a space electromagnetic field, and proposes an efficient field line coupling time-domain algorithm, which is suitable for electromagnetic interference analysis of a bifurcated line termination circuit in a complex electromagnetic environment. Background technique [0002] In complex objects such as airplanes and trains, it is usually necessary to use multiple types of cables to achieve data communication between different devices. In order to save the space occupied by cable laying, the cables are bundled and routed in local areas, and then separated and transported to different devices. This type of line is called a branch line. Due to the large number of equipment contained in airplanes and trains, some equipment will spontaneously generate electromagnetic leakage during operation, and then the radiation will affect the branch line...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/367
CPCG06F30/367G06F2113/16Y02E60/00
Inventor 叶志红吴小林汝梦祖石艳超鲁唱唱张玉
Owner CHONGQING UNIV OF POSTS & TELECOMM
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