DocumentCode
791382
Title
Spectrum analysis of base-line-popping noise in MR heads
Author
Hsu, Yimin
Author_Institution
Headway Technol. Inc., Milpitas, CA, USA
Volume
31
Issue
6
fYear
1995
fDate
11/1/1995 12:00:00 AM
Firstpage
2636
Lastpage
2638
Abstract
Characteristics of base-line-popping (BLP) noise in MR heads are described. A simple mathematical model describing the BLP noise spectrum is presented. In this model, random-telegraph-like noise is used to approximate BLP noise. The correlation function and noise spectrum density are derived analytically for a special case. The calculated noise spectrum is in good agreement with experimental data. “Excessive noise” in the low frequencies are found to be the general signature of BLP noise for shielded MR heads
Keywords
magnetic heads; magnetic recording noise; magnetoresistive devices; random noise; spectral analysis; BLP noise spectrum; MR heads; base-line-popping noise; correlation function; excessive noise; low frequency noise; mathematical model; noise spectrum density; random-telegraph-like noise; shielded MR heads; spectrum analysis; Autocorrelation; Magnetic field measurement; Magnetic heads; Magnetic noise; Magnetic sensors; Noise level; Pulse measurements; Sensor phenomena and characterization; Telegraphy; Yttrium;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.490077
Filename
490077
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