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. 04, 2011
Filed:
Oct. 30, 2003
Applicant:
Hilal Ezzeddine, Tours, FR;
Inventor:
Hilal Ezzeddine, Tours, FR;
Assignee:
STMicroelectronics, SA, Montrouge, FR;
Primary Examiner:
Int. Cl.
CPC ...
H01F 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A mode-switching transformer comprising a first line in common mode and a second line in differential mode, each line comprising two sections in series respectively coupled with one of the two sections of the other line and all sections having the same lengths, the common mode line being connected in series with a capacitor, to lower the central frequency of the transformer passband, the λ/4 lengths of the sections being chosen to correspond to a central frequency greater than the central frequency desired for the transformer.