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:
Feb. 03, 2009
Filed:
Mar. 03, 2005
Wilhelm Weitzenberger, Simbach/Inn, DE;
Franz Rottmoser, Schechen, DE;
Wilhelm Weitzenberger, Simbach/Inn, DE;
Franz Rottmoser, Schechen, DE;
Kathrein-Werke KG, Rosenheim, DE;
Abstract
An improved high frequency filter of coaxial construction comprises one or more resonators having an electrically conductive internal conductor configured as an internal conductive tube and an electrically conductive external conductor. An electrically conductive base electrically interconnects the internal conductor and the external conductor. A cover covers the high frequency filter with respect to the base; and an inner side and outer side. The inner side points toward a free end of the internal conductive tube. A dielectric layer having a dielectric constant Egreater than 2 is arranged between the outer side of the cover and the free end of the internal conductive tube. The radial extent of the dielectric layer substantially covers the cross section of the internal conductive tube at the free end thereof.