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:
Jan. 08, 2019
Filed:
Aug. 04, 2017
Applicant:
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Inventors:
Rui Ma, Lexington, MA (US);
Omer Tanovic, Cambridge, MA (US);
Assignee:
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/18 (2006.01); H03M 1/08 (2006.01); H04L 25/49 (2006.01);
U.S. Cl.
CPC ...
H03M 1/0854 (2013.01); H04L 25/4902 (2013.01); H04L 25/4927 (2013.01);
Abstract
A distortion mitigation quantizer circuit includes a pre-quantizer to generate a first quantized signal having L output signal levels from an input signal and a digital pulse-width-modulation (PWM) circuit to modulate the first quantized signal using M modulating carriers with PWM carrier frequency fand according to an over sampling ratio (OSR) N in order to generate a second quantized signal. In this case, a number of the modulating carriers M is substantially equal to twice L/N.