High bandwidth flexure for hard disk drives
US8004798B1 · kind B1 · utility
45Cited by
14References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 4, 2009 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Apr 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/4833
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive flexure has a pattern of voids in the ground plane in the area directly underneath the read and write bond pads, in order to adjust the respective impedances of the read and write bond pad pairs to match the impedances of the read and write transducers and the signal trace pairs to and from the transducers. The resulting impedance matched bond pads increase the effective signal bandwidth of the flexure and its electrical connections, decreasing the probability of error at high signal speeds and increasing the maximum data rate through the suspension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.