Cancellation of common-mode excitation by S<sub>CD21</sub> and S<sub>CC21</sub> of CMF due to phase relationship between DM and CM voltages

Matsushima, Tohlu; Kikuchi, Koichi; Ishibashi, Kenta; Fukumoto, Yusuke; Kuwabara, Nobuo

doi:10.1109/emceurope48519.2020.9245809

Cited by 2 publications

(1 citation statement)

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“…When employing CMFs to suppress CM radiation noise in high-speed signals, it is crucial to focus on mixed-mode Sparameters [14], particularly Scc21 and Scd21. The study presented in [15] discusses design methodologies for enhancing Scc21, while the research in [16] proposes that improving Scd21 is essential for reducing cable radiation emissions and common-mode currents. These parameters are critical as they measure the common-mode to common-mode and common-mode to differential-mode transmission, respectively, providing insights into the effectiveness of CMFs in mitigating unwanted noise [17].…”

Section: Proposed Receiver Compensation Techniques With Cmfmentioning

confidence: 99%

Mitigating Camera Interference Arising From RF High Transmit Power: The Role of Common Mode Filters and Receiver Compensation Techniques

Jiang,

Zhang,

Xiao

et al. 2024

IEEE Access

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This paper investigates the challenges and solutions related to Radio Frequency Interference (RFI) in mobile devices equipped with high-resolution cameras, focusing on the Mobile Industry Processor Interface (MIPI) C-PHY interface. The compact design of modern mobile devices makes them susceptible to RFI, which can degrade signal quality and cause visual anomalies. Through simulation-based analysis, we explore the effectiveness of Common Mode Filters (CMFs) in mitigating RFI, highlighting the significance of CMF placement near the Board-to-Board (BTB) connector for enhanced RF immunity and signal integrity. Additionally, we examine receiver compensation techniques to further protect C-PHY signals against RFI. These techniques address the issue of signal imbalances, which can lead to differential-mode interference. The study proposes fine-tuning signal path delays at the CPU receiver end as a strategy to minimize noise, demonstrating improvements in eye diagram metrics. Our findings offer valuable insights into optimizing the placement of CMFs and implementing receiver compensation techniques, contributing to the enhancement of signal integrity and noise reduction in high-speed digital interfaces, thereby ensuring the reliability and performance of camera systems in mobile devices within the RF/EMC/SIPI domain.

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Section: Proposed Receiver Compensation Techniques With Cmfmentioning

confidence: 99%

Mitigating Camera Interference Arising From RF High Transmit Power: The Role of Common Mode Filters and Receiver Compensation Techniques

Jiang,

Zhang,

Xiao

et al. 2024

IEEE Access

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show abstract

Analysis of CM-Signal Suppression Effect from DM Signal by Common-Mode Choke Coil Using Chain-Parameter Matrix

Kuwabara

Matsushima

Fukumoto

2022

2022 IEEE International Symposium on Electromagnetic Compatibility &Amp; Signal/Power Integrity (EMCSI)

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Cancellation of common-mode excitation by S_CD21 and S_CC21 of CMF due to phase relationship between DM and CM voltages

Cited by 2 publications

References 11 publications

Mitigating Camera Interference Arising From RF High Transmit Power: The Role of Common Mode Filters and Receiver Compensation Techniques

Mitigating Camera Interference Arising From RF High Transmit Power: The Role of Common Mode Filters and Receiver Compensation Techniques

Analysis of CM-Signal Suppression Effect from DM Signal by Common-Mode Choke Coil Using Chain-Parameter Matrix

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Cancellation of common-mode excitation by SCD21 and SCC21 of CMF due to phase relationship between DM and CM voltages

Cited by 2 publications

References 11 publications

Mitigating Camera Interference Arising From RF High Transmit Power: The Role of Common Mode Filters and Receiver Compensation Techniques

Mitigating Camera Interference Arising From RF High Transmit Power: The Role of Common Mode Filters and Receiver Compensation Techniques

Analysis of CM-Signal Suppression Effect from DM Signal by Common-Mode Choke Coil Using Chain-Parameter Matrix

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Cancellation of common-mode excitation by S_CD21 and S_CC21 of CMF due to phase relationship between DM and CM voltages