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.

Date of Patent:
Dec. 26, 2017

Filed:

Feb. 16, 2016
Applicant:

Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;

Inventors:

Stefan Andersson, Lund, SE;

Fenghao Mu, Hjärup, SE;

Johan Wernehag, Malmö, SE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 7/09 (2006.01); H03H 7/01 (2006.01); H01F 27/42 (2006.01); H01F 27/29 (2006.01); H01P 1/212 (2006.01); H03H 7/38 (2006.01); H03H 7/42 (2006.01); H01F 27/28 (2006.01); H03H 1/00 (2006.01);
U.S. Cl.
CPC ...
H03H 7/09 (2013.01); H01F 27/42 (2013.01); H03H 7/0115 (2013.01); H03H 7/1758 (2013.01); H03H 7/1775 (2013.01); H03H 7/1791 (2013.01); H03H 7/425 (2013.01); H01F 27/2804 (2013.01); H01F 27/29 (2013.01); H01P 1/212 (2013.01); H03H 7/38 (2013.01); H03H 7/42 (2013.01); H03H 7/427 (2013.01); H03H 2001/0078 (2013.01);
Abstract

A transformer filter arrangement including a transformer having a first winding and a second winding is provided. Both of the first and the second windings are located between an outer border and an inner border, which is inside the outer border. The transformer filter arrangement further includes at least one reactive sub circuit, each including at least one inductor. The first winding of the transformer is divided into a plurality of winding segments. At least a first one of the at least one reactive sub circuit being connected in series with the winding segments of the first winding between two such winding segments, and having at least one of the at least one inductor located inside said inner border.


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