Predicted outputs of a high-frequency carrier-type magnetic head for 100 Gbit/in(2) generation

A high-frequency carrier-type head was fabricated by using photolithographi c techniques and its head outputs were measured by reproducing a recorded m agnetic tape. A two step computer simulation method was devised in order to handle the high frequency carrier, and the dynamic impedance variation rat es (DIVR) of the magnetic head were calculated using this simulation. Based on this data. the signal output level was estimated for a theoretical 1/4 wavelength matching transmission line (ideal transformer) and an assumed pe rmeability. It was expected that the calculated head output level was 400 G bit/in(2) actual recording density. (C) 2001 Elsevier Science B.V. All righ ts reserved.