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Abstract
A wideband common-mode (CM) suppression filter for bend discontinuities in differential signaling is proposed. A known approach, using tightly coupled microstrips and providing CM reduction in the frequency range from DC till 6 GHz, is revisited and adapted to interconnect structures with a signal bandwidth (BW) up to 50 GHz. The design's effectiveness in reducing unwanted mode conversion and its flexibility in terms of the applied signal BW is assessed by means of simulations and measurements. Furthermore, the potential of the filter design for usage with 4-level pulse amplitude modulation (PAM4) signaling schemes is discussed. It is demonstrated that the high frequency implementation of this filter reduces CM noise by 62% and that it can successfully be applied in high speed interconnects using PAM4 signaling for data rates up to 70 Gbps.
Keywords
DISCONTINUITIES, Bend discontinuity, mode conversion, common-mode (CM), differential, signaling, 4-level pulse amplitude modulation (PAM4)

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MLA
Deroo, Andries, et al. “Reduction of Common-Mode Noise in Bent Differential Interconnects for PAM4 Signaling.” 2019 ELECTRICAL DESIGN OF ADVANCED PACKAGING AND SYSTEMS (EDAPS 2019), IEEE, 2019, pp. 1–3, doi:10.1109/EDAPS47854.2019.9011682.
APA
Deroo, A., Huynen, M., Rogier, H., Van den Brande, Q., Vande Ginste, D., Chan, H.-W., & Wu, R.-B. (2019). Reduction of common-mode noise in bent differential interconnects for PAM4 signaling. In 2019 ELECTRICAL DESIGN OF ADVANCED PACKAGING AND SYSTEMS (EDAPS 2019) (pp. 1–3). Kaohsiung, TAIWAN: IEEE. https://doi.org/10.1109/EDAPS47854.2019.9011682
Chicago author-date
Deroo, Andries, Martijn Huynen, Hendrik Rogier, Quinten Van den Brande, Dries Vande Ginste, Hao-Wei Chan, and Ruey-Beei Wu. 2019. “Reduction of Common-Mode Noise in Bent Differential Interconnects for PAM4 Signaling.” In 2019 ELECTRICAL DESIGN OF ADVANCED PACKAGING AND SYSTEMS (EDAPS 2019), 1–3. IEEE. https://doi.org/10.1109/EDAPS47854.2019.9011682.
Chicago author-date (all authors)
Deroo, Andries, Martijn Huynen, Hendrik Rogier, Quinten Van den Brande, Dries Vande Ginste, Hao-Wei Chan, and Ruey-Beei Wu. 2019. “Reduction of Common-Mode Noise in Bent Differential Interconnects for PAM4 Signaling.” In 2019 ELECTRICAL DESIGN OF ADVANCED PACKAGING AND SYSTEMS (EDAPS 2019), 1–3. IEEE. doi:10.1109/EDAPS47854.2019.9011682.
Vancouver
1.
Deroo A, Huynen M, Rogier H, Van den Brande Q, Vande Ginste D, Chan H-W, et al. Reduction of common-mode noise in bent differential interconnects for PAM4 signaling. In: 2019 ELECTRICAL DESIGN OF ADVANCED PACKAGING AND SYSTEMS (EDAPS 2019). IEEE; 2019. p. 1–3.
IEEE
[1]
A. Deroo et al., “Reduction of common-mode noise in bent differential interconnects for PAM4 signaling,” in 2019 ELECTRICAL DESIGN OF ADVANCED PACKAGING AND SYSTEMS (EDAPS 2019), Kaohsiung, TAIWAN, 2019, pp. 1–3.
@inproceedings{8672125,
  abstract     = {A wideband common-mode (CM) suppression filter for bend discontinuities in differential signaling is proposed. A known approach, using tightly coupled microstrips and providing CM reduction in the frequency range from DC till 6 GHz, is revisited and adapted to interconnect structures with a signal bandwidth (BW) up to 50 GHz. The design's effectiveness in reducing unwanted mode conversion and its flexibility in terms of the applied signal BW is assessed by means of simulations and measurements. Furthermore, the potential of the filter design for usage with 4-level pulse amplitude modulation (PAM4) signaling schemes is discussed. It is demonstrated that the high frequency implementation of this filter reduces CM noise by 62% and that it can successfully be applied in high speed interconnects using PAM4 signaling for data rates up to 70 Gbps.},
  author       = {Deroo, Andries and Huynen, Martijn and Rogier, Hendrik and Van den Brande, Quinten and Vande Ginste, Dries and Chan, Hao-Wei and Wu, Ruey-Beei},
  booktitle    = {2019 ELECTRICAL DESIGN OF ADVANCED PACKAGING AND SYSTEMS (EDAPS 2019)},
  isbn         = {9781728124322},
  issn         = {2151-1225},
  keywords     = {DISCONTINUITIES,Bend discontinuity,mode conversion,common-mode (CM),differential,signaling,4-level pulse amplitude modulation (PAM4)},
  language     = {eng},
  location     = {Kaohsiung, TAIWAN},
  pages        = {1--3},
  publisher    = {IEEE},
  title        = {Reduction of common-mode noise in bent differential interconnects for PAM4 signaling},
  url          = {http://dx.doi.org/10.1109/EDAPS47854.2019.9011682},
  year         = {2019},
}

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