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:
Mar. 07, 2006
Filed:
Nov. 27, 2002
Andrzej Sawicki, Märsta, SE;
Andrzej Sawicki, Märsta, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A multilayer coupled-lines directional coupler of the quarter wavelength type comprises a first, a second and a third conductive layer, joined by means of dielectric layers. The first conductive layer comprises a first and a second conductive strip, separated, mutually parallel, each in one end connected to a first output and in another end connected to a second output. The second conductive layer comprises a third conductive strip, parallel to the first and the second conductive strip, in one end connected to a third output and in another end connected to a fourth output. The first conductive layer comprises a fourth conductive strip, parallel to and located between the first and the second conductive strip, in one end connected to the third output, and in another end connected to the fourth output.