Title :
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
fDate :
11/1/1991 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
