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Time frequency analysis method for multi-conductor transmission line network

A multi-conductor transmission line, time-frequency analysis technology, applied in the field of time-frequency analysis of transmission line network

Inactive Publication Date: 2016-12-07
NAT UNIV OF DEFENSE TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The present invention aims at above-mentioned deficiencies, combines the advantage of BLT equation and FDTD method, proposes a kind of time-frequency analysis method (namely BLT-FDTD hybrid method) of multi-conductor transmission line network, can analyze the cable network that contains non-uniform transmission line, in In the case of ensuring the analysis accuracy, the calculation efficiency is maximized, which can meet the needs of actual complex system cable network analysis

Method used

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  • Time frequency analysis method for multi-conductor transmission line network
  • Time frequency analysis method for multi-conductor transmission line network
  • Time frequency analysis method for multi-conductor transmission line network

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Embodiment Construction

[0041] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] In the first step, the BLT equation of the transmission line network is established.

[0043] The BLT equation is a frequency domain method for solving transmission line networks. Its expression is

[0044] V ‾ = [ I ‾ ‾ + S ‾ ‾ ] · [ Γ ‾ ‾ - S ‾ ‾ ] - 1 · V ‾ s - ...

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Abstract

The invention belongs to the field of electromagnetic compatibility, and mainly solves a problem of crosstalk analysis of a non-uniform transmission line network. Combining with the advantages of a BLT equation and an FDTD method, the invention proposes a BLT-FDTD mixed method. The method can carry out the analysis of a cable network comprising a non-uniform transmission line, enables the calculation efficiency to be maximized under the condition that the analysis precision is guaranteed, and can meet the analysis demand of a cable network of an actual complex system. The method is high in practical value, can be applied to the electromagnetic compatibility analysis at different levels, and is good in application prospect in the fields of electromagnetic interference suppression, electromagnetic compatibility analysis and evaluation and electromagnetic protection.

Description

technical field [0001] The invention relates to an analysis method of electromagnetic interference and electromagnetic compatibility, in particular to a time-frequency analysis method of a transmission line network, which can be applied to the analysis of transmission line characteristics at different levels such as system level, equipment level and circuit board level. Background technique [0002] Cable analysis is an important part of system-level EMC analysis. Compared with the "front door" interference generated through signal channels such as antennas, the "back door" interference generated through cables is often more serious. Because EMC engineers pay great attention to the design of the signal channel in the system design stage, they can take many measures to avoid electromagnetic interference and ensure the electromagnetic compatibility of the signal channel; while the interference generated by the cable network is easy to be ignored, and the coupling mechanism is ...

Claims

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Application Information

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IPC IPC(8): G01R27/32G01R31/00
CPCG01R27/32G01R31/001
Inventor 覃宇建周东明李高升卢中昊
Owner NAT UNIV OF DEFENSE TECH
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