Equalization and near-end crosstalk (NEXT) noise cancellation for 20-Gb/s 4-PAM backplane serial I/O interconnections

被引：32
|
作者：
Hur, Y [1 ]
Maeng, M
Chun, C
Bien, F
Kim, H
Chandramouli, S
Gebara, E
Laskar, J
机构：
[1] Georgia Inst Technol, Sch Elect & Comp Engn, Georgie Elect Design Ctr, Atlanta, GA 30308 USA
[2] Quellan Inc, Atlanta, GA 30308 USA
[3] Georgia Inst Technol, Mixed Signal Team, Atlanta, GA 30308 USA
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2005年 / 53卷 / 01期
关键词：
backplane; equalization; finite impulse response (FIR) filter; four-level pulse amplitude modulation (4-PAM); input/output (I/O) interconnection; LC ladder; near-end crosstalk (NEXT) noise cancellation; tunable pole-zero (PZ) filter; 20; Gb/s; 0.18-mu m CMOS;
D O I：
10.1109/TMTT.2004.839311
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Limitations in current backplane environments impede high-speed data transmission above 5 Gb/s. In this paper, a system architecture to extend the transmission capacities of legacy backplanes is proposed. The incentives for using a four-level pulse amplitude modulation (4-PAM) scheme are also presented. The architecture is built from feed-forward equalizer and tunable filter elements for near-end crosstalk noise cancellation. Each of the circuits is implemented in a standard 0.18-mum-CMOS process. The building blocks of the architecture, which include an LC ladder, a modified Gilbert-cell multiplier with improved headroom, and a tunable active high-pass filter are described in detail. Results of the architecture are shown demonstrating 20-Gb/s 4-PAM signal transmission.
引用
收藏
页码：246 / 255
页数：10
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