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:
Oct. 15, 2019
Filed:
Oct. 12, 2018
Rambus Inc., Sunnyvale, CA (US);
Reza Navid, San Jose, CA (US);
Rambus Inc., Sunnyvale, CA (US);
Abstract
A receiver frontend having a high-frequency AC-coupled path in parallel to a low-frequency feed-forward path for baseline correction. The low-frequency path blocks the DC common-mode voltage of the input differential signal pair, but passes low-frequency differential signal components (e.g., long strings of a single value, or disparities in the number of 1's and 0's over a long period of time.) The low-frequency path can include a passive network for level shifting and extending the range of acceptable common-mode input voltages. The low-frequency path can also include a differential (e.g., transconductance) amplifier to isolate the common-mode input voltage from the output of the baseline wander correction circuit.