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. 13, 1999
Filed:
May. 07, 1998
Applicant:
Inventors:
Kouki Sato, Akita-ken, JP;
Katsumi Saito, Akita-ken, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
336212 ; 336 83 ; 336192 ;
Abstract
A wirewound balun transformer for planar packaging comprising a flanged core which has end flanges at both ends, at least one center flange, and two or more winding recesses, a flat core held in parallel with the flanged core, and windings coiled around the winding recesses, characterized in that one side face of the center flange is not flush with but is formed behind the plane that connects one side faces on the same side of the end flanges, each of the end flanges of the flanged core has an opposing pair of electrodes formed on both side faces, and the center flange has a single electrode formed on the opposite side face.