Effect of Feed Forward Equalization on EMI-Related Common Mode Noise in 56-Gbps PAM-4 Optical Transmitter

Rehan Azmat; C. Patrick Yue

doi:10.1109/APEMC49932.2021.9596692

Effect of Feed Forward Equalization on EMI-Related Common Mode Noise in 56-Gbps PAM-4 Optical Transmitter

Rehan Azmat, C. Patrick Yue

Department of Electronic and Computer Engineering

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

Abstract

Electromagnetic interference (EMI) signals, which radiate in the environment and cause the malfunction of electronic devices in proximity, are generated due to the common mode (CM) noise in differential circuits. This CM noise is produced because of the imbalance in the charging and discharging paths of the driver and equalizer circuits in the transmitter. However, the effects of the equalizer on CM noise have not been examined. This paper systematically investigates the effect of different feed forward equalizer (FFE) configurations on EMI-related CM noise in a 56-Gbps four-level pulse-amplitude modulation (PAM-4) optical transmitter, aiming to provide an optimized configuration with low CM noise and power consumption, while providing high compensation. The simulation results show that an asymmetric equalizer significantly improves the compensation performance. However, the offset in differential pair of output stage should be minimized to decrease the CM noise generated from the FFE.

Original language	English
Title of host publication	Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728176215
DOIs	https://doi.org/10.1109/APEMC49932.2021.9596692
Publication status	Published - 2021
Event	2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021 - Bali, Indonesia Duration: 27 Sept 2021 → 30 Sept 2021

Publication series

Name	Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021

Conference

Conference	2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021
Country/Territory	Indonesia
City	Bali
Period	27/09/21 → 30/09/21

Bibliographical note

Publisher Copyright:
© 2021 IEEE.

Keywords

Electromagnetic interference (EMI)
common mode (CM) noise
feed forward equalization (FFE)
four-level pulse-amplitude modulation (PAM-4)
high-speed
optical transmitter

Access to Document

10.1109/APEMC49932.2021.9596692

Cite this

Azmat, R., & Patrick Yue, C. (2021). Effect of Feed Forward Equalization on EMI-Related Common Mode Noise in 56-Gbps PAM-4 Optical Transmitter. In Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021 (Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEMC49932.2021.9596692

Azmat, Rehan ; Patrick Yue, C. / Effect of Feed Forward Equalization on EMI-Related Common Mode Noise in 56-Gbps PAM-4 Optical Transmitter. Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021. Institute of Electrical and Electronics Engineers Inc., 2021. (Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021).

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title = "Effect of Feed Forward Equalization on EMI-Related Common Mode Noise in 56-Gbps PAM-4 Optical Transmitter",

abstract = "Electromagnetic interference (EMI) signals, which radiate in the environment and cause the malfunction of electronic devices in proximity, are generated due to the common mode (CM) noise in differential circuits. This CM noise is produced because of the imbalance in the charging and discharging paths of the driver and equalizer circuits in the transmitter. However, the effects of the equalizer on CM noise have not been examined. This paper systematically investigates the effect of different feed forward equalizer (FFE) configurations on EMI-related CM noise in a 56-Gbps four-level pulse-amplitude modulation (PAM-4) optical transmitter, aiming to provide an optimized configuration with low CM noise and power consumption, while providing high compensation. The simulation results show that an asymmetric equalizer significantly improves the compensation performance. However, the offset in differential pair of output stage should be minimized to decrease the CM noise generated from the FFE.",

keywords = "Electromagnetic interference (EMI), common mode (CM) noise, feed forward equalization (FFE), four-level pulse-amplitude modulation (PAM-4), high-speed, optical transmitter",

author = "Rehan Azmat and \{Patrick Yue\}, C.",

note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021 ; Conference date: 27-09-2021 Through 30-09-2021",

year = "2021",

doi = "10.1109/APEMC49932.2021.9596692",

language = "English",

series = "Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021",

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Azmat, R & Patrick Yue, C 2021, Effect of Feed Forward Equalization on EMI-Related Common Mode Noise in 56-Gbps PAM-4 Optical Transmitter. in Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021. Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021, Institute of Electrical and Electronics Engineers Inc., 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021, Bali, Indonesia, 27/09/21. https://doi.org/10.1109/APEMC49932.2021.9596692

Effect of Feed Forward Equalization on EMI-Related Common Mode Noise in 56-Gbps PAM-4 Optical Transmitter. / Azmat, Rehan; Patrick Yue, C.
Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021. Institute of Electrical and Electronics Engineers Inc., 2021. (Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021).

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

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AU - Azmat, Rehan

AU - Patrick Yue, C.

PY - 2021

Y1 - 2021

N2 - Electromagnetic interference (EMI) signals, which radiate in the environment and cause the malfunction of electronic devices in proximity, are generated due to the common mode (CM) noise in differential circuits. This CM noise is produced because of the imbalance in the charging and discharging paths of the driver and equalizer circuits in the transmitter. However, the effects of the equalizer on CM noise have not been examined. This paper systematically investigates the effect of different feed forward equalizer (FFE) configurations on EMI-related CM noise in a 56-Gbps four-level pulse-amplitude modulation (PAM-4) optical transmitter, aiming to provide an optimized configuration with low CM noise and power consumption, while providing high compensation. The simulation results show that an asymmetric equalizer significantly improves the compensation performance. However, the offset in differential pair of output stage should be minimized to decrease the CM noise generated from the FFE.

AB - Electromagnetic interference (EMI) signals, which radiate in the environment and cause the malfunction of electronic devices in proximity, are generated due to the common mode (CM) noise in differential circuits. This CM noise is produced because of the imbalance in the charging and discharging paths of the driver and equalizer circuits in the transmitter. However, the effects of the equalizer on CM noise have not been examined. This paper systematically investigates the effect of different feed forward equalizer (FFE) configurations on EMI-related CM noise in a 56-Gbps four-level pulse-amplitude modulation (PAM-4) optical transmitter, aiming to provide an optimized configuration with low CM noise and power consumption, while providing high compensation. The simulation results show that an asymmetric equalizer significantly improves the compensation performance. However, the offset in differential pair of output stage should be minimized to decrease the CM noise generated from the FFE.

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KW - common mode (CM) noise

KW - feed forward equalization (FFE)

KW - four-level pulse-amplitude modulation (PAM-4)

KW - high-speed

KW - optical transmitter

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BT - Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021

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ER -

Azmat R, Patrick Yue C. Effect of Feed Forward Equalization on EMI-Related Common Mode Noise in 56-Gbps PAM-4 Optical Transmitter. In Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021. Institute of Electrical and Electronics Engineers Inc. 2021. (Proceedings of the 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility, APEMC 2021). doi: 10.1109/APEMC49932.2021.9596692

Effect of Feed Forward Equalization on EMI-Related Common Mode Noise in 56-Gbps PAM-4 Optical Transmitter

Abstract

Publication series

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Bibliographical note

Keywords

Access to Document

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Research on Fiber-Millimeter Wave Network Chips for Indoor High-Speed Communication

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Effect of Feed Forward Equalization on EMI-Related Common Mode Noise in 56-Gbps PAM-4 Optical Transmitter

Abstract

Publication series

Conference

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Projects

Research on Fiber-Millimeter Wave Network Chips for Indoor High-Speed Communication

Cite this