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. 14, 2015
Filed:
Sep. 11, 2013
Applicant:
Stmicroelectronics SA, Montrouge, FR;
Inventors:
Hani Sherry, Grenoble, FR;
Andreas Kaiser, Villeneuve D'ascq, FR;
Ullrich Pfeiffer, Wuppertal, DE;
Andreia Cathelin, Laval, FR;
Janusz Grzyb, Hilden, DE;
Yan Zhao, Los Angeles, CA (US);
Assignee:
STMicroelectronics SA, Montrouge, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/03 (2006.01); H03L 7/099 (2006.01); H03B 27/00 (2006.01); H03L 7/23 (2006.01);
U.S. Cl.
CPC ...
H03K 3/0315 (2013.01); H03B 27/00 (2013.01); H03L 7/099 (2013.01); H03L 7/23 (2013.01);
Abstract
A frequency oscillator includes a ring oscillator having N inverters coupled in series, where N is an odd integer equal to three or more. A first filter is coupled between an output node of a first of the inverters and an output line of the frequency oscillator. A second filter is coupled between an output node of a second of the inverters and the output line of the frequency oscillator.