A 0.18 μm-CMOS near-end crosstalk (NEXT) noise canceller utilizing tunable active filters for 4-PAM/20Gbps throughput backplane channels

Author

Chun, C. ; Hur, Y. ; Maeng, M. ; Kim, H. ; Chandramouli, S. ; Gebara, E. ; Laskar, J.

Author_Institution

Georgia Electron. Design Center, Georgia Inst. of Technol., Atlanta, GA, USA

fYear

2005

fDate

23-26 May 2005

Firstpage

4847

Abstract

In this paper, active filter structures in a near-end crosstalk (NEXT) noise canceller for 20Gbit/s throughput is investigated. The active filters provide tunable noise emulation circuits and comprise the primary components of an analog NEXT canceller architecture. The two topologies proposed are a pole-zero (PZ) filter and a finite impulse response (FIR) filter. The NEXT canceller is designed in a 0.18μm CMOS technology. Due to the multi-gigabit environment, an analog approach is proposed here as a alternative to a much more complex and demanding digital approach.

Keywords

CMOS analogue integrated circuits; FIR filters; active filters; circuit tuning; crosstalk; poles and zeros; pulse amplitude modulation; 0.18 micron; 20 Gbit/s; 4-PAM; CMOS technology; FIR filter; analog NEXT canceller architecture; backplane channels; finite impulse response filter; near-end crosstalk; pole-zero filter; tunable active filters; tunable noise emulation circuits; Active filters; Active noise reduction; Backplanes; CMOS technology; Circuit noise; Crosstalk; Finite impulse response filter; Noise cancellation; Throughput; Tunable circuits and devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on

Print_ISBN

0-7803-8834-8

Type

conf

DOI

10.1109/ISCAS.2005.1465718

Filename

1465718