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:
May. 23, 2006
Filed:
Jul. 06, 2004
Applicant:
LU Chen, Brooklyn, NY (US);
Inventor:
Lu Chen, Brooklyn, NY (US);
Assignee:
Scientific Components Coporation, Brooklyn, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 3/08 (2006.01); H01P 5/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A directional coupler has a multi-layered low temperature co-fired ceramic substrate. A circuit line is located on one of the layers and is connected to an input port and an output port. Another circuit line is located on a different layer and is connected to a forward coupled port and a reverse coupled port. The circuit lines are located close to each other such that they are electromagnetically coupled. Ground planes are located on the top and bottom surfaces of the substrate.