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:
Jun. 12, 2012
Filed:
Aug. 05, 2009
Applicants:
Kongpop U-yen, Alexandria, VA (US);
Edward J. Wollack, Clarksville, MD (US);
Inventors:
Kongpop U-Yen, Alexandria, VA (US);
Edward J. Wollack, Clarksville, MD (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A compact planar microwave blocking filter includes a dielectric substrate and a plurality of filter unit elements disposed on the substrate. The filter unit elements are interconnected in a symmetrical series cascade with filter unit elements being organized in the series based on physical size. In the filter, a first filter unit element of the plurality of filter unit elements includes a low impedance open-ended line configured to reduce the shunt capacitance of the filter.