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Compensation of transmission loss in degraded connector using a passive equalization method

Published online by Cambridge University Press:  21 November 2025

Jiayu Liu Open the ORCID record for Jiayu Liu [Opens in a new window] ,
Jinchun Gao ,
Chaoyi Wang ,
Tianmeng Zhang ,
Ziyang Zhang  and
Yiming Chen
Jiayu Liu
Affiliation:
Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing University of Posts and Telecommunications, Beijing, China
Jinchun Gao*
Affiliation:
Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing University of Posts and Telecommunications, Beijing, China
Chaoyi Wang
Affiliation:
Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing University of Posts and Telecommunications, Beijing, China
Tianmeng Zhang
Affiliation:
Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing University of Posts and Telecommunications, Beijing, China
Ziyang Zhang
Affiliation:
Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing University of Posts and Telecommunications, Beijing, China
Yiming Chen
Affiliation:
Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing University of Posts and Telecommunications, Beijing, China
*
Corresponding author: Jinchun Gao; Email: gjc@bupt.edu.cn
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Abstract

Radio frequency (RF) coaxial connectors are crucial in high-speed digital systems for data transmission. Connectors applied in harsh environments will be degraded over time, affecting the signal integrity. At present, a suitable equalization technology is of substantial value for enhancing the quality of high-speed signal transmission. However, there is limited research focusing on specific equalization designs for degraded connectors. In this current work, based on the theoretical analysis, simulations validation and experimental testing, an equivalent circuit model of the degraded connector was developed. Furthermore, an equalization structure consisting of series resistance and capacitance was proposed. The transmission loss caused by the connector degradation was compensated effectively using this method. Meanwhile, eye diagram characteristics were improved significantly at the receiver where zero timing jitter and an almost full eye opening were achieved. Equalization enhances the eye opening factor by over 50% compared to the uncompensated system. This paper integrates electrical contact theory with high-speed equalization design. Tools and guidance were provided through the proposed modeling techniques for studying equalization effects of this degraded connector system in designs and applications.

Keywords

coaxial connectordegradationequalizationequivalent circuiteye diagram

Information

Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , First View , pp. 1 - 11
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Copyright
© The Author(s), 2025. Published by Cambridge University Press in association with The European Microwave Association.

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