ACT-enabled 100 MHz channel equalizer [for magnetic recording application]

Author

Kumar, Derek D. ; Hunsinger, Bill J.

Author_Institution

Electron. Decisions Inc., Urbana, IL, USA

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

4799

Lastpage

4803

Abstract

An acoustic charge transport (ACT) equalizer with 128 taps and a 180-MHz tap sampling rate is demonstrated with a variety of head responses. The standard programmable transversal filter (PTF) product has been modified for magnetic recording applications by the addition of an instrumentation interface and specialized analog circuitry for low-frequency equalization. The resulting module, when combined with controlling software is known as a filter/equalizer development station (FEDS). A laboratory system employing two such FEDS modules for separate amplitude and zero-crossing equalization in a digital saturated magnetic recording peak detection channel is modeled and demonstrated. Equalizer impacts on system speed, packing density, and error rates are predicted with a channel model

Keywords

acoustic signal processing; equalisers; magnetic recording; surface acoustic wave filters; ultrasonic delay lines; 100 MHz; acoustic charge transport; acoustic charge transport equalizer; channel equalizer; channel model; controlling software; digital saturated magnetic recording; error rates; filter/equalizer development station; instrumentation interface; low-frequency equalization; magnetic recording applications; packing density; peak detection channel; programmable transversal filter; specialized analog circuitry; system speed; zero-crossing equalization; Application software; Equalizers; Instruments; Laboratories; Magnetic circuits; Magnetic heads; Magnetic recording; Magnetic separation; Sampling methods; Transversal filters;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278951

Filename

278951