Mechanism and Validation of USB 3.0 Connector Caused Radio Frequency Interference
The mechanism of a universal serial bus 3.0 connector caused radio frequency interference (RFI) to a nearby antenna is studied. The connector radiation is modeled by an equivalent stripline-fed slot antenna, based on the analysis of the common mode current path on the connector structure. With the proposed connector model, the original connector radiation source can be replaced by an equivalent magnetic dipole source, which is directly correlated with the physical quantity on the connector. Applying reciprocity theorem, the equivalent dipole source can be applied to predict the coupled noise power to the antenna. The proposed connector radiation mechanism and model are validated through full-wave simulation and measurement. The application of the magnetic dipole source for RFI estimation is demonstrated in a real laptop system.
Y. Sun et al., "Mechanism and Validation of USB 3.0 Connector Caused Radio Frequency Interference," IEEE Transactions on Electromagnetic Compatibility, vol. 62, no. 4, pp. 1169-1178, Institute of Electrical and Electronics Engineers (IEEE), Jul 2019.
The definitive version is available at https://doi.org/10.1109/TEMC.2019.2925935
Electrical and Computer Engineering
Keywords and Phrases
Connector; Current Return Path; Magnetic Dipole; Radio Frequency Interference (RFI); Reciprocity; Slot Antenna; Universal Serial Bus (USB) 3.0
International Standard Serial Number (ISSN)
Article - Journal
© 2019 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
16 Jul 2019