A magnetic head for 150 MHz, high density recording

Ash, K.P.; Wachenschwanz, D.; Brucker, C. F.; Olson, Joseph; Trcka, Milan V.; Jagieliński, T.

doi:10.1109/20.102873

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Magnetic Heads1

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1991

1999

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Cited by 15 publications

(1 citation statement)

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“…Early in the investigation it became apparent that heads based on ferrite materials would not support the target Nyquist frequency of 150 MHz. To support a channel data rate of 300 Mbit/s a multilayer composite metal alloy head was developed [7].…”

Section: Magnetic Headsmentioning

confidence: 99%

Development of a Recording Channel of Exceptionally High Data Transfer Rate

1991

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An experimental high-speed magnetic recording channel using a new metal alloy composite head with 150 MHz bandwidth capability and metal particle tape has been constructed. At the linear density of 4 kfr/mm (95 to 100 kfr/in) and Nyquist frequency of 150 MHz, the measured 300 kHz slot SNR was greater than 32 dB. Using a DC-free 11-12 code at a data rate of 250 Mbitls and density of 3.35 kfr/mm (85 kfr/in), error rates of lxlO· s were measured. Under these conditions, a 300 kHz slot SNR of 37.5 dB at 125 MHz was measured.-855 -

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Section: Magnetic Headsmentioning

confidence: 99%