Hilbert filter for double-layer perpendicular recording media

Hiroaki Muraoka; Martin Hassner; Yoshiaki Sonobe; Hideaki Nemoto; Satoshi Yamamoto; David Berman; Augusto Rossi; Yoshihisa Nakamura

doi:10.1109/TMAG.2002.801898

Hilbert filter for double-layer perpendicular recording media

Hiroaki Muraoka^*, Martin Hassner, Yoshiaki Sonobe, Hideaki Nemoto, Satoshi Yamamoto, David Berman, Augusto Rossi, Yoshihisa Nakamura

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

Abstract

Signal equalization using a Hilbert filter for perpendicular double-layer media in association with a geometric mean radius reader is described. A theoretical approach is presented based on reciprocity, which reveals that the equalization is equivalent to the longitudinal transformation of a magnetization vector. Thus, a readback step-like response from the perpendicular media is transformed into a singie-peak pulse. At high frequencies, no gain boost takes place, in contrast to differentiators. Results of spin-stand testing with an finite-impulse response Hilbert filter are also described.

Original language	English
Pages (from-to)	2337-2339
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	38
Issue number	5 I
DOIs	https://doi.org/10.1109/TMAG.2002.801898
Publication status	Published - 2002 Sept
Externally published	Yes
Event	2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands Duration: 2002 Apr 28 → 2002 May 2

Keywords

Differentiator
Double-layer perpendicular media
Hilbert filter
Perpendicular magnetic recording

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2002.801898

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title = "Hilbert filter for double-layer perpendicular recording media",

abstract = "Signal equalization using a Hilbert filter for perpendicular double-layer media in association with a geometric mean radius reader is described. A theoretical approach is presented based on reciprocity, which reveals that the equalization is equivalent to the longitudinal transformation of a magnetization vector. Thus, a readback step-like response from the perpendicular media is transformed into a singie-peak pulse. At high frequencies, no gain boost takes place, in contrast to differentiators. Results of spin-stand testing with an finite-impulse response Hilbert filter are also described.",

keywords = "Differentiator, Double-layer perpendicular media, Hilbert filter, Perpendicular magnetic recording",

author = "Hiroaki Muraoka and Martin Hassner and Yoshiaki Sonobe and Hideaki Nemoto and Satoshi Yamamoto and David Berman and Augusto Rossi and Yoshihisa Nakamura",

year = "2002",

month = sep,

doi = "10.1109/TMAG.2002.801898",

language = "English",

volume = "38",

pages = "2337--2339",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "5 I",

note = "2002 International Magnetics Conference (Intermag 2002) ; Conference date: 28-04-2002 Through 02-05-2002",

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TY - JOUR

T1 - Hilbert filter for double-layer perpendicular recording media

AU - Muraoka, Hiroaki

AU - Hassner, Martin

AU - Sonobe, Yoshiaki

AU - Nemoto, Hideaki

AU - Yamamoto, Satoshi

AU - Berman, David

AU - Rossi, Augusto

AU - Nakamura, Yoshihisa

PY - 2002/9

Y1 - 2002/9

N2 - Signal equalization using a Hilbert filter for perpendicular double-layer media in association with a geometric mean radius reader is described. A theoretical approach is presented based on reciprocity, which reveals that the equalization is equivalent to the longitudinal transformation of a magnetization vector. Thus, a readback step-like response from the perpendicular media is transformed into a singie-peak pulse. At high frequencies, no gain boost takes place, in contrast to differentiators. Results of spin-stand testing with an finite-impulse response Hilbert filter are also described.

AB - Signal equalization using a Hilbert filter for perpendicular double-layer media in association with a geometric mean radius reader is described. A theoretical approach is presented based on reciprocity, which reveals that the equalization is equivalent to the longitudinal transformation of a magnetization vector. Thus, a readback step-like response from the perpendicular media is transformed into a singie-peak pulse. At high frequencies, no gain boost takes place, in contrast to differentiators. Results of spin-stand testing with an finite-impulse response Hilbert filter are also described.

KW - Differentiator

KW - Double-layer perpendicular media

KW - Hilbert filter

KW - Perpendicular magnetic recording

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DO - 10.1109/TMAG.2002.801898

M3 - Conference article

AN - SCOPUS:0036761952

SN - 0018-9464

VL - 38

SP - 2337

EP - 2339

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 5 I

T2 - 2002 International Magnetics Conference (Intermag 2002)

Y2 - 28 April 2002 through 2 May 2002

ER -

Hilbert filter for double-layer perpendicular recording media

Abstract

Keywords

ASJC Scopus subject areas

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