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:
Nov. 23, 2021
Filed:
May. 19, 2020
Applicant:
Viasat, Inc., Carlsbad, CA (US);
Inventor:
Branislav A. Petrovic, Falls Church, VA (US);
Assignee:
VIASAT, INC., Carlsbad, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 27/36 (2006.01); H04L 27/38 (2006.01); H04B 1/40 (2015.01);
U.S. Cl.
CPC ...
H04L 27/364 (2013.01); H04B 1/40 (2013.01); H04L 27/3863 (2013.01);
Abstract
To reduce signal distortion, a remote terminal receives a quadrature-modulated transmitter-check signal from a user terminal. The remote terminal measures an in-phase/quadrature (I/Q) imbalance error and/or a direct current (DC) offset error in the transmitter-check signal. The remote terminal then transmits to the user terminal transmitter-correction information derived from an I/Q imbalance error or a DC offset error. The transmitter-correction information is for counteracting the I/Q imbalance error or the DC offset error at the user terminal.