Abstract
In modern mobile electronic systems, USB connector has been identified as one of the dominant noise sources for desense issues. In this paper, the noise coupled to the Wi-Fi antenna from a USB connector is investigated. With the assistance of full-wave simulations, the root cause of desense noise is identified as the non-ideal electrical connection between the metal chassis and the USB receptacle shell where it is installed. The proposed radiation mechanism is validated through measurements of a real tablet device, and 15 dB noise level reduction is observed with a better grounding structure.
Recommended Citation
A. Huang and X. Yan and J. Sun and Q. Huang and J. Fan and S. Wu and D. Zhang and H. Liao and S. Jin and Z. Yang, "Investigation and Mitigation of Radio Frequency Interference Caused by Weak Grounding of USB Type-C Receptacle Connector," 2020 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMCSI 2020, pp. 139 - 144, article no. 9191587, Institute of Electrical and Electronics Engineers, Jul 2020.
The definitive version is available at https://doi.org/10.1109/EMCSI38923.2020.9191587
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
full-wave simulation; grounding quality evaluation; radiation mechanism; Type-C USB
International Standard Book Number (ISBN)
978-172817430-3
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Jul 2020
Comments
National Science Foundation, Grant 1916535