Radio-frequency interference mitigation strategies for high-speed connectors

Hsiao, C. C.; Wu, Tzong–Lin; Chiu, Cheng‐Nan; Wang, Shih-Hung; Wang, Chien-Chung; Wang, Wen-Shan; Lin, Ying-Hsi

doi:10.1109/edaps.2013.6724456

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…Without the partial U-channel ground connection, the highest |S cd21 | was approximately −30 dB, as shown in Fig. 14(b), due to the design of the ground pins [15], [16]. However, with the partial U-channel ground connection, |S cd21 | was reduced by approximately 40 dB at these resonances.…”

Section: B Emi Suppression With Partial U-channel Groundmentioning

confidence: 92%

“…The fields from the currents on the differential signal traces are nearly canceling in the far field; however, when the frequency becomes high, the field cancelation lessens, as will be discussed in Section IV. The authors in [15] and [16] also report the effect of different ground pin configurations on mode conversion and radiation, and the best ground pin configuration was used in the connector structure in the study presented in this paper. However, the current on the ground pins still contributed to the radiation at the half-wavelength resonances of the ground conductor geometry.…”

Section: Introductionmentioning

confidence: 99%

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EMI Coupling Paths and Mitigation in a Board-to-Board Connector

Xiao

Toor

et al. 2015

IEEE Trans. Electromagn. Compat.

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Cage connectors for optical subassembly I/O modules have been identified as one of the main coupling paths in an optical link at the front-end of switches and routers. In the study presented herein, the simulation model used to study electromagnetic interference coupling physics and mitigation of the optical cage connector was corroborated by comparing the measured and simulated results for the total radiated power (TRP). Currents on the adjacent ground references to the differential signal conductors caused half-wave resonant peaks in the TRP response in the frequency range of 4-18 GHz. At frequencies from 18 to 28 GHz, both full-wave simulation and analytical formulas indicate that the radiation results primarily from the currents on the signal traces. The radiation from the optical cage connector was suppressed with absorbing materials, and the coupling path was verified, together with the optical cage and module enclosure.Index Terms-Absorbing material, electromagnetic interference (EMI) coupling path, high frequency, mitigation, optical cage connector, radiation mechanism, total radiated power (TRP).

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Section: B Emi Suppression With Partial U-channel Groundmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

EMI Coupling Paths and Mitigation in a Board-to-Board Connector

Xiao

Toor

et al. 2015

IEEE Trans. Electromagn. Compat.

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“…Imagine many robots each operating in a cluttered indoor area, such as a warehouse; communications play a critical role for these robots to understand the environment, locate themselves, and carry out their tasks. In such environments, RF-based communications create interference [114]. VLP systems can solve not only the RF interference issue but also increase the mobile robot positioning accuracy.…”

Section: Advantages Of Vlc-based Applicationsmentioning

confidence: 99%

Indoor visible light communications, networking, and applications

et al. 2019

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Light-emitting diodes (LEDs) are changing indoor wireless communications. Visible light communications (VLC) that use LEDs as transmitters is an emerging research area and has significant commercial potential. The light emitted from LEDs can simultaneously carry information and provide illumination. Due to the intrinsic characteristics of light, VLC is more secure, more power efficient, and can provide higher network data transmission rates than radio frequency communications. This paper describes state-of-the-art VLC systems including transmitters, receivers, and channel models. Modulation and networking algorithms for physical layer and cross-layer designs are discussed. These algorithms are designed considering practical constraints, such as the bandlimited channel, illumination requirements, and transmitted power limitations. Indoor localization algorithms are proposed, with a particular focus on fingerprinting. In addition, this paper introduces practical applications of VLC in many fields such as national defense, healthcare, robotics, and vehicle-tovehicle communications. The paper concludes with a discussion of the challenges, opportunities, and future of VLC. Nomenclature ACO-OFDM asymmetrically clipped optical OFDM APD avalanche photodiode BER bit error rate CDMA code division multiple access CEO-OFDM clipping-enhanced optical OFDM DCO-OFDM DC-biased optical OFDM HCM Hadamard coded modulation IoT internet of things JOW joint optimal waveform LED light-emitting diodes LOS line-of-sight MAI multiple access interference MIMO multiple input multiple output NLOS non-line-of-sight OCDMA optical code division multiple access OFDM orthogonal frequency division multiplexing OOC optical orthogonal code OPEN ACCESS RECEIVED

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EMI-reduction coding based on 8b/10b

Chou

2017

2017 IEEE International Symposium on Electromagnetic Compatibility &Amp; Signal/Power Integrity (EMCSI)

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Radio-frequency interference mitigation strategies for high-speed connectors

Cited by 6 publications

References 7 publications

EMI Coupling Paths and Mitigation in a Board-to-Board Connector

EMI Coupling Paths and Mitigation in a Board-to-Board Connector

Indoor visible light communications, networking, and applications

EMI-reduction coding based on 8b/10b

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