The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 2015
Filed:
Mar. 14, 2013
Pmc-sierra Us, Inc., Sunnyvale, CA (US);
Vadim Milirud, Vancouver, CA;
Predrag Acimovic, Burnaby, CA;
PMC-Sierra US, Inc., Sunnyvale, CA (US);
Abstract
A programmable passive peaking equalizer that can compensate for a frequency dependent loss of a variety of data channels is disclosed herein. Monotonic increase in signal loss vs. frequency of board traces, cables and even fiber causes significant distortion of transmitted data referred to as inter-symbol interference (ISI). Some embodiments of programmable passive equalizers disclosed herein can minimize ISI for a wide range of data channels with very low power penalty. Various embodiments of the passive equalizer can program the amount of peaking that occurs at the Nyquist frequency of the data rate, and hence compensates for high frequency signal loss. This in turn equalizes the high frequency patterns in the transmitted data stream, effectively eliminating the worst case ISI.