Read path compensation for SNR and signal transfer

摘要

A method and apparatus is provided for extending a read bandwidth and increasing a high-frequency signal-to-noise ratio (SNR) of a front-end of a read path of a hard disk drive (HDD) by introducing a high impedance section at the front-end of the read path. The high impedance section may mitigate capacitive effects found at the front-end of the read path, thereby improving signal transfer by extending the read bandwidth.

主权项

1. A read path for a hard disk drive (HDD), comprising:
a read head; read circuitry; a transmission line connecting the read head and the read circuitry, wherein the transmission line consists of one or more traces; and an impedance section associated with extending a read bandwidth and increasing a signal-to-noise ratio (SNR) of a front-end of the read path, wherein the front-end comprises at least the read head, wherein the impedance section is part of at least one of the read head and the transmission line.