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, 2010
Filed:
Jul. 03, 2008
Applicant:
Ki-jae Song, Gyeonggi-do, KR;
Inventor:
Ki-Jae Song, Gyeonggi-do, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 3/08 (2006.01); H03H 7/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
A printed circuit board (PCB) including an impedance-matched strip transmission line includes a strip transmission line including a main line and at least one pair of branch lines branching off from the main line. An upper ground layer is disposed over the strip transmission line and has upper opening parts corresponding in position to the branch lines. A lower ground layer is disposed under the strip transmission line and has lower opening parts corresponding in position to the branch lines. The upper and lower opening parts are symmetric about the branch lines of the strip transmission line.