Differential interconnects with integrated equalization and common-mode filtering for broadband signal integrity enhancement in high-speed PAM-4 signaling
- Author
- Tim Pattyn (UGent) , Arno Moerman (UGent) , Martijn Huynen (UGent) and Dries Vande Ginste (UGent)
- Organization
- Abstract
- In high-speed differential interconnects on printed circuit boards, signal integrity (SI) issues arise when neglecting the inherent low-pass characteristic and ubiquitous presence of common-mode noise. This work proposes a novel open-circuited stub equalizer with integrated common-mode filter in order to compensate for the low-pass characteristic while simultaneously suppressing the transmission of unwanted common-mode noise to the receiver. A theoretical analysis of the open-circuited stub equalizer is conducted, and suitable approximations are derived to facilitate equalizer synthesis. Experimental validation is provided by a test structure consisting of a 20 cm microstrip serpentine delay line for which a 4 GHz equalizer is designed. Frequency-domain measurements show a 1-dB bandwidth up to 3.97 GHz with a passband ripple of 0.38 dB for the differential mode and a significant reduction in transmission for the common mode. The resulting SI enhancement increases the possible data rate from 6 Gbps to 20 Gbps using a PAM-4 (pulse amplitude modulation 4-level) modulation scheme.
- Keywords
- differential signaling, passive equalization, common-mode filtering, signal integrity, PAM-4
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-01J00RW5KR0W1HYVY8VQ81Q1VN
- MLA
- Pattyn, Tim, et al. “Differential Interconnects with Integrated Equalization and Common-Mode Filtering for Broadband Signal Integrity Enhancement in High-Speed PAM-4 Signaling.” 2024 IEEE 28th Workshop on Signal and Power Integrity (SPI), IEEE, 2024, doi:10.1109/spi60975.2024.10539219.
- APA
- Pattyn, T., Moerman, A., Huynen, M., & Vande Ginste, D. (2024). Differential interconnects with integrated equalization and common-mode filtering for broadband signal integrity enhancement in high-speed PAM-4 signaling. 2024 IEEE 28th Workshop on Signal and Power Integrity (SPI). Presented at the 2024 IEEE 28th Workshop on Signal and Power Integrity (SPI), Lsibon, Portugal. https://doi.org/10.1109/spi60975.2024.10539219
- Chicago author-date
- Pattyn, Tim, Arno Moerman, Martijn Huynen, and Dries Vande Ginste. 2024. “Differential Interconnects with Integrated Equalization and Common-Mode Filtering for Broadband Signal Integrity Enhancement in High-Speed PAM-4 Signaling.” In 2024 IEEE 28th Workshop on Signal and Power Integrity (SPI). New York, USA: IEEE. https://doi.org/10.1109/spi60975.2024.10539219.
- Chicago author-date (all authors)
- Pattyn, Tim, Arno Moerman, Martijn Huynen, and Dries Vande Ginste. 2024. “Differential Interconnects with Integrated Equalization and Common-Mode Filtering for Broadband Signal Integrity Enhancement in High-Speed PAM-4 Signaling.” In 2024 IEEE 28th Workshop on Signal and Power Integrity (SPI). New York, USA: IEEE. doi:10.1109/spi60975.2024.10539219.
- Vancouver
- 1.Pattyn T, Moerman A, Huynen M, Vande Ginste D. Differential interconnects with integrated equalization and common-mode filtering for broadband signal integrity enhancement in high-speed PAM-4 signaling. In: 2024 IEEE 28th Workshop on Signal and Power Integrity (SPI). New York, USA: IEEE; 2024.
- IEEE
- [1]T. Pattyn, A. Moerman, M. Huynen, and D. Vande Ginste, “Differential interconnects with integrated equalization and common-mode filtering for broadband signal integrity enhancement in high-speed PAM-4 signaling,” in 2024 IEEE 28th Workshop on Signal and Power Integrity (SPI), Lsibon, Portugal, 2024.
@inproceedings{01J00RW5KR0W1HYVY8VQ81Q1VN,
abstract = {{In high-speed differential interconnects on printed circuit boards, signal integrity (SI) issues arise when neglecting the inherent low-pass characteristic and ubiquitous presence of common-mode noise. This work proposes a novel open-circuited stub equalizer with integrated common-mode filter in order to compensate for the low-pass characteristic while simultaneously suppressing the transmission of unwanted common-mode noise to the receiver. A theoretical analysis of the open-circuited stub equalizer is conducted, and suitable approximations are derived to facilitate equalizer synthesis. Experimental validation is provided by a test structure consisting of a 20 cm microstrip serpentine delay line for which a 4 GHz equalizer is designed. Frequency-domain measurements show a 1-dB bandwidth up to 3.97 GHz with a passband ripple of 0.38 dB for the differential mode and a significant reduction in transmission for the common mode. The resulting SI enhancement increases the possible data rate from 6 Gbps to 20 Gbps using a PAM-4 (pulse amplitude modulation 4-level) modulation scheme.}},
author = {{Pattyn, Tim and Moerman, Arno and Huynen, Martijn and Vande Ginste, Dries}},
booktitle = {{2024 IEEE 28th Workshop on Signal and Power Integrity (SPI)}},
isbn = {{9798350382945}},
issn = {{2475-9481}},
keywords = {{differential signaling,passive equalization,common-mode filtering,signal integrity,PAM-4}},
language = {{eng}},
location = {{Lsibon, Portugal}},
pages = {{4}},
publisher = {{IEEE}},
title = {{Differential interconnects with integrated equalization and common-mode filtering for broadband signal integrity enhancement in high-speed PAM-4 signaling}},
url = {{http://doi.org/10.1109/spi60975.2024.10539219}},
year = {{2024}},
}
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