Martin Hassner, Uwe Schwiegelshohn, et al.
IEEE Transactions on Magnetics
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.
Martin Hassner, Uwe Schwiegelshohn, et al.
IEEE Transactions on Magnetics
Roger Wood, Yoshiaki Sonobe, et al.
Journal of Magnetism and Magnetic Materials
Andreas Moser, Kentaro Takano, et al.
Journal of Physics D: Applied Physics
Kenji Miura, Hiroaki Muraoka, et al.
IEEE Transactions on Magnetics