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:
Oct. 20, 2009
Filed:
Apr. 20, 2004
Jurek Dabrowski, Täby, SE;
Andrzej Sawicki, Märsta, SE;
Jurek Dabrowski, Täby, SE;
Andrzej Sawicki, Märsta, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
The invention relates to a directional coupler comprising coupled lines, and a method for achieving coupling in a directional coupler under compensation conditions. The directional coupler comprises coupled lines (), including a first line () and a second line (), and at least one ground plane (). At least one of the ground planes is a tuning ground plane (), and a distance (), between the first() and the second () line, and each distance (), between the first line () and the respective tuning ground plane (), are adapted so as to contribute to a desired coupling level under compensation conditions.