6類網路連接器的電氣特性與簡化量測程序之研究

A Novel Simplified Measurement Procedure for 4-Pair 100 Ω Category 6 Connecting Hardware

吳家勳(Chia-Hsun Wu)

指導教授 ： 涂世雄

中原大學/工學院/電機工程研究所/碩士(2005年)

https://doi.org/10.6840/cycu200500776

摘要

本篇論文主要為簡化Category 6 Connecting Hardware網路連接器的各項高頻參數的量測程序，由於Connecting Hardware的量測程序複雜及製作過程困難度較高，我們提出新的簡化量測程序及方程式去改善量測及製作的效能，並且從網路分析儀量測S參數和實驗上證實，確實能達到我們所設計的目標。
我們針對Near-end Crosstalk這項參數，進行了Test Plug量測程序的簡化；並且從以往Category 5、Category 5e的Near-end Crosstalk量測程序與Category 6量測程序的差異中，以網路分析儀量測S參數及比對實驗上證實。這些簡化程序不僅降低程序的繁複性，並且使Connecting hardware能獲得一定的可靠度。此外，我們針對Far-end Crosstalk這項參數，從網路分析儀量測S參數及重複性的實驗和計算，獲得Test Plug的簡化多項式；此多項式不僅簡化了Test Plug的量測程序負擔，而且這些多項式能用來計算Connecting hardware相關元件，縮短量測程序的時間。
我們提出的簡化量測程序及方程式，能有效解決廠商在產品研發及生產階段所面臨的量測問題；並可幫助廠商縮短產品開發週期，加速生產進程，縮短S參數量測時間及計算，使產品享有絕佳品質，能於最短時間進入市場。

關鍵字

網路連接器 ； 量測程序 ； 資訊插座 ； 遠端串音 ； 近端串音

並列摘要

In this thesis, we propose a novel simplified procedure of measurement of high-frequency parameters of Category 6 connecting hardware electric characteristic. Traditionally, the measurement procedures of Test Plug are complicated so that it makes a long course time. Hence, we try to simplify the measurement procedures and equations. From the measurements of S-parameter and experiments by network analyzer, the simplified method verifies that it really reaches the goals we design.
Connecting hardware measurement parameters include Insertion Loss (IL), Return Loss (RL), Near-end Crosstalk (NEXT), Far-end Crosstalk (FEXT) and Longitudinal Conversion Loss (LCL). The devices under test (DUT) include Test Plug and Jack. In order to measure NEXT and FEXT parameters efficiently, we simplify measurement procedures and equations of Test Plug. Our proposal includes the following procedures:
(1) From the difference among CAT5, CAT5e and CAT6 measurement procedures, the range of qualification of Test Plug NEXT loss of our proposal is different from the standard one.
(2) According the above simplified procedure, we measure the S-parameters and execute related experiments to verify our method. In conclusion, the simplified procedure not merely reduces the heavy and complex procedures, but also enables connecting hardware to obtain certain reliability.
(3) Similarly, for Test Plug FEXT loss, we measure S-parameters and execute the related experiments by network analyzer and obtain some simplified equations.
(4) The Test Plug FEXT loss simplified equations obtained from above procedures not merely simplify the procedures of measurement, but also can be used for calculating the relevant components of connecting hardware to shorten the measurement time.
It is believed that our proposal can be applied to solve the problems of manufacturers encountered in the research and development of products. It can help them to shorten the development period, accelerate the studying progress, shorten the S-parameters measurement and calculation time and make the high quality products.

並列關鍵字

Test plug ； Far-end crosstalk ； NEXT ； measurement procedures ； FEXT ； Cat5e ； Connecting hardware ； Keystone jack ； Near-end crosstalk ； Cat.6 ； Plug ； Jack

參考文獻

〔5〕 陳世賢,高速電腦網路線連接器的研製,成功大學電機工程學系碩士論文,2001.

〔9〕 Chun-Wen Paul Huang, Charles E. Smith, “A Novel Simplified Four-Port Scattering Parameter Model for Design of Four-Pair Twisted-Pair Cabling Systems for Local Area Networks,” IEEE Transactions on Microwave Theory and Techniques, Vol. 48, No. 5, May 2000.

〔10〕 Namhoon Kim, Myunghee Sung, Jeong-Gyun An, and Joungho Kim, “Reduction of Crosstalk Noise in Modular Jack for High-Speed Differential Signal Interconnection,” IEEE Transactions on Advanced Packaging, Vol. 24, No. 3, Aug. 2001.

〔11〕 Qingqing Liang, John D. Cressler, “A Simple Four-Port Parasitic Deembedding Methodology for High-Frequency Scattering Parameter and Noise Characterization of SiGe HBTs,” IEEE Transactions on microwave theory and techniques, Vol. 51, No. 11, Nov. 2003.

〔12〕 Koichi Yanagawa, Ken Yamanaka, “A Measurement of Balanced Transmission Lines Using S-parameters,” IEEE IMTC, May 1994.