Electronic device with an improved antenna arrangement

US8224271B2 · kind B2 · utility

Assignee

• Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

• Patrik Persson · Lund, SE
• Martin Johansson · Timrå, SE
• Anders Stjernman · Lindome, SE
• Sven Anders Gösta Derneryd · Onsala, SE
• Jonas Fridén · Mölndal, SE

Key dates

• Filing date: Dec 21, 2007
• Grant date: Jul 17, 2012
• Expiry date: Apr 11, 2028

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01Q21/29
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

An electronic device (200,300) comprising an antenna arrangement with first and second antenna groups with first (122, 142) and a second (124, 144) radiation elements. The first and second radiation elements in each group have first and second respective polarizations and gain, and said groups also comprise a beam forming network (126, 146) connected to the radiation elements of the group and to an output selector (150). The beam forming network (126, 146) of each antenna group uses the radiation elements (122, 124; 142, 144) in the group to create a radiation pattern (127, 147) with a polarization which is a composite of the first and second polarizations of the elements in the group, so that a first (127) and a second (147) radiation pattern of composite polarization is created. The output selector (150) selects or combines signals received by the two antenna groups as its output.