Group‐delay‐insensitive linear equaliser for reducing eye‐skew in PAM‐4 receivers | Zendy

Wu Kejun | Zendy; Zhang Huazi | Zendy

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Group‐delay‐insensitive linear equaliser for reducing eye‐skew in PAM‐4 receivers

Author(s) -

Wu Kejun,

Zhang Huazi

Publication year - 2017

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

ISSN - 1350-911X

DOI - 10.1049/el.2017.1167

Subject(s) - equaliser , skew , group delay and phase delay , control theory (sociology) , pulse amplitude modulation , computer science , power consumption , transfer function , power (physics) , mathematics , electronic engineering , pulse (music) , algorithm , engineering , telecommunications , physics , artificial intelligence , electrical engineering , quantum mechanics , detector , decoding methods , control (management) , bandwidth (computing)

A novel group‐delay‐insensitive linear equaliser (GDILE) is proposed to reduce the eye‐skew in four‐level pulse amplitude modulation (PAM‐4) receivers. With a cross‐coupled positive‐feedback degeneration network, the proposed GDILE employs additional pole and zero into its transfer function to reduce the group‐delay variation with frequency. Simulation results shows a 40 Gbit/s PAM‐4 receiver that employs a GDILE that can reduce the eye‐skew by 73% compared with the conventional linear equaliser with a modest increase of power consumption.

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