Pulse shape, resolution, and signal-to-noise ratio in perpendicular recording

被引：34
|
作者：
Valcu, B [1 ]
Roscamp, T
Bertram, HN
机构：
[1] Univ Calif San Diego, Ctr Magnet Recording Res, La Jolla, CA 92093 USA
[2] Seagate Technol, Pittsburgh, PA 15203 USA
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2002年 / 38卷 / 01期
关键词：
magnetic scalar potential; perpendicular recording; resolution; single pulsewidth; SNR;
D O I：
10.1109/20.990120
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The paper theoretically examines playback characteristics of a giant magnetoresistive (GMR) head for perpendicular recorded magnetization transitions with a soft underlayer. The magnetic scalar potential, calculated numerically by the finite-element method, is fitted to a simple formula involving geometry-dependent parameters. The reciprocity principle leads to the shape of the single pulse signal. For high permeability of the underlayer the pulse has an error function-type dependence on distance. Within this approximation, the paper derives simple formulas for the pulsewidth T-50, D-50, and transition-noise-limited signal-to-noise ratio.
引用
收藏
页码：288 / 294
页数：7
相关论文
共 50 条
  • [21] Signal-to-noise ratio and signal-to-noise efficiency in SMASH imaging
    Sodickson, DK
    Griswold, MA
    Jakob, PM
    Edelman, RR
    Manning, WJ
    MAGNETIC RESONANCE IN MEDICINE, 1999, 41 (05) : 1009 - 1022
  • [22] Influence of wavefront distortion on the measurement of pulse signal-to-noise ratio
    Xing, Dingding
    Yuan, Suochao
    Kou, Jingwei
    Da, Zhengshang
    OPTICS COMMUNICATIONS, 2024, 554
  • [23] Scaling of Algorithmic Bias in Pulse Oximetry with Signal-to-Noise Ratio
    Cao, Jiaming
    Mehta, Neil Ashim
    Wu, Jingyi
    Wood, Sossena
    Kainerstorfer, Jana M.
    Grover, Pulkit
    2023 45TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY, EMBC, 2023,
  • [24] MEASUREMENT OF SIGNAL-TO-NOISE RATIO IN PULSE-INTERVAL MODULATION
    TRIPATHI, JN
    INTERNATIONAL JOURNAL OF ELECTRONICS, 1983, 55 (02) : 247 - 252
  • [25] EFFECT OF WEIGHTING UPON SIGNAL-TO-NOISE RATIO IN PULSE BURSTS
    URKOWITZ, H
    GEISLER, JD
    RICCIARDI, NA
    IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1973, AES9 (04) : 486 - 494
  • [26] Calibration of pulse signal-to-noise ratio measurement for femtosecond laser
    Ouyang, Xiaoping
    Zhang, Fuling
    Tang, Shunxing
    Zhu, Jianqiang
    Zhongguo Jiguang/Chinese Journal of Lasers, 2009, 36 (04): : 945 - 948
  • [27] SIGNAL-TO-NOISE RATIO IN RECORDING VISUAL EVOKED-POTENTIALS (VEP)
    LEHTONEN, JB
    TORN, A
    SCANDINAVIAN JOURNAL OF CLINICAL & LABORATORY INVESTIGATION, 1972, 29 : 72 - &
  • [28] A CONTRIBUTION FOR IMPROVEMENTS IN THE SIGNAL-TO-NOISE RATIO IN ANALOG SOUND RECORDING TAPE
    SINGHOFF, DIW
    JOURNAL OF THE AUDIO ENGINEERING SOCIETY, 1984, 32 (12): : 1011 - 1011
  • [29] Tradeoffs between the axial resolution and the signal-to-noise ratio in elastography
    Srinivasan, S
    Righetti, R
    Ophir, J
    SECOND JOINT EMBS-BMES CONFERENCE 2002, VOLS 1-3, CONFERENCE PROCEEDINGS: BIOENGINEERING - INTEGRATIVE METHODOLOGIES, NEW TECHNOLOGIES, 2002, : 963 - 964
  • [30] Ghost Imaging in Reflection: Resolution, Contrast, and Signal-to-Noise Ratio
    Hardy, Nicholas D.
    Shapiro, Jeffrey H.
    QUANTUM COMMUNICATIONS AND QUANTUM IMAGING VIII, 2010, 7815
12345