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. 19, 2005
Filed:
Feb. 02, 2001
Applicants:
Thomas Baier, München, DE;
Michael Unterberger, Unterhaching, DE;
Inventors:
Thomas Baier, München, DE;
Michael Unterberger, Unterhaching, DE;
Assignee:
Epcos AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H009/64 ;
U.S. Cl.
CPC ...
Abstract
Proposed is a SAW HF filter with reactance elements, which is particularly suitable for mobile radio. The filter is balanced on both sides, is electrically symmetric, and comprises a four-pole reactance series element, which can be formed from two two-pole pole reactance elements or from a four-pole reactance element, and a resonator. One bar of the respective reactance elements is connected to the input side of the filter, while the other bar is connected to the output side of the filter.