Title：A new high-speed serial interface transmitter
Country：China
Patent No.：201410641518.3
Legal Status：Authorized
Inventor：Ke Huang, Ziqiang Wang, Xuqiang Zheng, Chun Zhang, Zhihua Wang
Assignee：Tsinghua University
Address：Mailbox No. 82, Beijing 100084
Filing Date：2014-11-13
Issue Date：2017-07-07
Abstract：
The invention discloses a novel high-speed serial interface transmitter. The transmitter comprises a combiner, a voltage-mode driver, a feed-forward equalizer and a feedback equalizer, wherein the feed-forward equalizer is integrated in the voltage-mode driver, an input end is connected with high-speed code stream serial data output by the combiner, and output impedance and an equilibrium factor can be independently adjusted; the feedback equalizer comprises a low-pass filter and a transconductance stage circuit which are both connected with an output end of the voltage-mode driver; the low-pass filter is used for extracting a low-frequency component of the high-speed data code stream output by the voltage-mode driver; the transconductance stage is simultaneously connected with the output of the low-pass filter; output voltage of the low-pass filter is converted into current, and the current and the output current of the voltage-mode driver are summated. The feed-forward equalizer is combined with the feedback equalizer, so that the skin effect attenuation and the dielectric loss attenuation are compensated through feedback and feed-forward respectively, meanwhile equilibrium is realized, and the power consumption of the transmitter is greatly reduced.
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