Disk drive comprising impedance discontinuity compensation for interconnect transmission lines
AssigneeWestern Digital Technologies, Inc.
InventorWilliam D. Huber
Life of this patent
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Abstract
A disk drive comprising a disk, and a head actuated over the disk, the head comprising a read element and a write element. The disk drive further comprises a preamp and an interconnect comprising a first transmission line and a second transmission line coupling the head to the preamp. A compensation network is disclosed operable to compensate for an impedance discontinuity in the first and second transmission lines, the compensation network comprising a first trace and a second trace connected in parallel with the first and second transmission lines, wherein a shape of the first and second traces varies to form at least a first capacitor.
Claims23
A disk drive comprising:
- a disk;
- a head actuated over the disk, the head comprising a read element and a write element;
- a preamp;
- and
- an interconnect comprising a first transmission line and a second transmission line coupling the head to the preamp, and a compensation network operable to compensate for an impedance discontinuity in the first and second transmission lines, the compensation network connected in parallel with the first and second transmission lines through first and second traces, wherein a shape of the first and second traces varies to form at least a first capacitor in the compensation network.
An interconnect for use in a disk drive, the disk drive comprising a head actuated over a disk, the head comprising a read element and a write element, the interconnect comprising:
- a first transmission line and a second transmission line operable to couple the head to a preamp;
- and
- a compensation network operable to compensate for an impedance discontinuity in the first and second transmission lines, the compensation network connected in parallel with the first and second transmission lines through first and second traces, wherein a shape of the first and second traces varies to form at least a first capacitor in the compensation network.
A method of manufacturing an interconnect for use in a disk drive, the disk drive comprising a head actuated over a disk, the head comprising a read element and a write element, the method comprising:
- fabricating a first transmission line and a second transmission line operable to couple the head to a preamp;
- and
- fabricating a compensation network operable to compensate for an impedance discontinuity in the first and second transmission lines, the compensation network connected in parallel with the first and second transmission lines through first and second traces, wherein a shape of the first and second traces varies to form at least a first capacitor in the compensation network.
Dependencies are inferred from the claim text.