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.
|ジャーナル||IEEE Transactions on Magnetics|
|出版ステータス||Published - 2002 9月|
|イベント||2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands|
継続期間: 2002 4月 28 → 2002 5月 2
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