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Method for simulating insertion loss of twisted-pairs in designing high-speed data communication system

A technology of insertion loss, communication system, applied in the field of communication

Inactive Publication Date: 2003-10-08
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current model only allows us to evaluate the signal attenuation on the twisted pair, which obviously cannot meet the requirements

Method used

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  • Method for simulating insertion loss of twisted-pairs in designing high-speed data communication system
  • Method for simulating insertion loss of twisted-pairs in designing high-speed data communication system
  • Method for simulating insertion loss of twisted-pairs in designing high-speed data communication system

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Experimental program
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Effect test

Embodiment 1

[0044] Among them, A and B are the parameters of the filter transfer function respectively, and the delay time of the delayer is 534ns. The result is as follows figure 2 and image 3 . Most of the simulation software can accept this form of equivalent circuit, which can be easily embedded in various simulation software for system simulation.

[0045] figure 2 The two curves in are comparisons of the magnitude of our equivalent circuit with the general model in the protocol. They fit the situation perfectly. image 3 The phase of the insertion loss is obtained from the equivalent circuit model, and the result is also in line with the theoretical derivation.

[0046] In the present invention, the equivalent insertion loss of circuit components such as a delayer and a filter fully conforms to the model in the agreement. In addition, the model also gives the relationship between the phase of the insertion loss and the sum of frequency, which is consistent with the th...

Embodiment 2

[0048] A

[0049] Figure 4 The two curves in are comparisons of the magnitude of the equivalent circuit of the present invention with the general model in the protocol. They fit the situation perfectly. Figure 5 The phase of the insertion loss is obtained from the equivalent circuit model, and the result is also in line with the theoretical derivation.

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Abstract

First, the method builds the new insertion loss model so as to obtain the amplitude information and the phase information of the insertion loss. Then, the design of equivalent electric circuit elements is carried out for the said information in order to embed the designed elements into entire design system to execute the system simulation. The invention shortens system design cycle greatly and raises accuracy of designs.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a method for simulating insertion loss of twisted-pair wires in high-speed data communication system design. Background technique [0002] With the continuous development of computer network technology and network equipment, the problem of physical channels between network equipment is becoming more and more important. At present, physical channels mainly include twisted pair wires, optical fibers, and coaxial cables. Among them, the cheap and good-quality twisted pair is an excellent choice for setting up a LAN with a range of 100 meters. Therefore, 100BASET and 1000BASET use five or more twisted pairs as the physical transmission medium. [0003] However, with the increase of the transmission distance, various interferences on the signals on the five types of twisted pair lines also increase, thus affecting the performance of the entire system. This effect ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/28
Inventor 陈宰曼来金梅叶凡任俊彦沈泊郑增钰陆正毅王煜
Owner FUDAN UNIV
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