Transition noise reduction in CGC perpendicular media
Kenji Miura, Hiroaki Muraoka, et al.
INTERMAG 2002
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.
Kenji Miura, Hiroaki Muraoka, et al.
INTERMAG 2002
Yoshihiro Ikeda, Kentaro Takano, et al.
Journal of Applied Physics
Roy L. Adler, Don Coppersmith, et al.
IEEE Trans. Inf. Theory
Gerhard Fettweis, Martin Hassner
ISCAS 1992