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:
Jul. 17, 2018
Filed:
Aug. 09, 2017
Applicant:
Analog Devices, Inc., Norwood, MA (US);
Inventor:
Gabriele Manganaro, Winchester, MA (US);
Assignee:
ANALOG DEVICES, INC., Norwood, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/46 (2015.01); H04L 1/20 (2006.01); G01R 31/36 (2006.01); G01R 27/04 (2006.01); H03M 1/08 (2006.01); H03M 1/74 (2006.01);
U.S. Cl.
CPC ...
H04L 1/20 (2013.01); G01R 27/04 (2013.01); G01R 31/3624 (2013.01); G01R 31/3648 (2013.01); H03M 1/0845 (2013.01); H03M 1/742 (2013.01);
Abstract
Circuits are used to sense and compensate or mitigate the imbalance errors, hence restoring the intended benefits of differential processing. In particular, the impedance mismatch between the positive and negative branches of a balanced system is sensed by digitizing an error voltage developed by injecting suitable common mode stimuli. The mismatch is then trimmed out by introducing and properly setting up a digitally controlled impedance that counters the original impedance mismatch and hence rebalances the signal path on-situ and prior to exercising the signal processing chain.