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.

Date of Patent:
Jan. 07, 2020

Filed:

Sep. 26, 2018
Applicant:

Qualcomm Incorporated, San Diego, CA (US);

Inventors:

Joung Won Park, San Diego, CA (US);

Ehab Abdel Ghany, San Diego, CA (US);

Li-chung Chang, Irvine, CA (US);

Assignee:

QUALCOMM Incorporated, San Diego, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01); H04L 25/08 (2006.01);
U.S. Cl.
CPC ...
H04L 25/085 (2013.01); H03F 3/45475 (2013.01); H03F 2200/165 (2013.01); H03F 2200/294 (2013.01);
Abstract

This disclosure provides systems and apparatuses for converting a single-ended analog signal into a differential analog signal. In some implementations, a single-ended to differential signal converter may include an N-path filter to generate a 180 degree phase-shifted version of a single-ended input signal. The single-ended input signal and the 180 degree phase-shifted version of the single-ended input signal together may form a differential signal. In some implementations, the N-path filter may delay the single-ended input through a series of switched capacitors.


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