Continuous-time adaptive infinite impulse response (IIR) equalizers for EPR4 channels

Author

Park, Joshua C. ; Carley, L. Richard

Author_Institution

IBM Microelectron., Waltham, MA, USA

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

926

Abstract

Fully adaptive continuous-time infinite impulse response (IIR) equalizer topologies for use in magnetic recording read channels are presented. This fully continuous-time equalization solution consolidates the anti-aliasing filter and the FIR equalizer into a single filter, which allows potential power savings. Two versions of continuous-time IIR equalizer topologies presented here are (a) a 7-pole 2-zero adaptive IIR equalizer and (b) a 4-pole 2-zero adaptive IIR equalizer following a 4th order LPF with Q boost. This study shows that both equalizers outperform the conventional 5-tap FIR equalizer following a 7-pole 2-zero equiripple anti-aliasing filter in EPR4 channels

Keywords

IIR filters; adaptive equalisers; low-pass filters; magnetic recording; network topology; poles and zeros; 4-pole 2-zero adaptive IIR equalizer; 4th order LPF; 5-tap FIR equalizer; 7-pole 2-zero adaptive IIR equalizer; 7-pole 2-zero equiripple anti-aliasing filter; EPR4 channels; FIR equalizer; IIr filter; Q boost; anti-aliasing filter; continuous-time IIR equalizer topologies; continuous-time adaptive IIR equalizers; continuous-time equalization; hard disk drives; infinite impulse response equalizer; low pass filter; magnetic recording read channels; power savings; Delay; Equalizers; Finite impulse response filter; Hard disks; IIR filters; Magnetic recording; Magnetic separation; Poles and zeros; Timing; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1999. GLOBECOM '99

Conference_Location

Rio de Janeireo

Print_ISBN

0-7803-5796-5

Type

conf

DOI

10.1109/GLOCOM.1999.830219

Filename

830219