Electronics Optics & Control, Volume. 29, Issue 4, 68(2022)

Design of New CTLE Equalizer with Negative Capacitance Structure

LU Dechao1...2, ZHENG Xuqiang2, LYU Fangxu1, WANG Heming1, CHEN Jiang2, WU Miaomiao1 and LIU Tao1 |Show fewer author(s)
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  • 1[in Chinese]
  • 2[in Chinese]
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    As the rate of data transmission continues to increasethe data loss caused by the channel becomes more and more serious.Using the traditional Continuous-Time Linear Equalizer (CTLE) to equalize and compensate for the signal can no longer offset the serious signal attenuation caused by the channel.In order to better compensate for the attenuationthe traditional CTLE equalizer is further improvedand a new CTLE based on negative capacitance is proposed.On the basis of the traditional CTLEtwo cross-connected MOS transistors are used to form a negative capacitorwhich is superimposed on the output of the traditional first-level CTLE to form a second-level structure,which can increase high-frequency gain and achieve greater bandwidthso as to provide better compensation for channel attenuation.The simulation results show that at a data rate of 25 Gibit/sthe equalizer with a negative capacitance has good compensation capability.After equalizationthe horizontal opening of the eye diagram reaches 0.9 Unit Interval (UI).The new CTLE based on negative capacitance is helpful for improving the overall data transmission rate.

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    LU Dechao, ZHENG Xuqiang, LYU Fangxu, WANG Heming, CHEN Jiang, WU Miaomiao, LIU Tao. Design of New CTLE Equalizer with Negative Capacitance Structure[J]. Electronics Optics & Control, 2022, 29(4): 68

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    Paper Information

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    Received: Mar. 21, 2021

    Accepted: --

    Published Online: Apr. 22, 2022

    The Author Email:

    DOI:10.3969/j.issn.1671-637x.2022.04.013

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