EP 0614246 A1 19940907 - Array antenna.
Title (en)
Array antenna.
Title (de)
Gruppenantenne.
Title (fr)
Réseau d'antennes.
Publication
Application
Priority
SE 9300480 A 19930215
Abstract (en)
The invention relates to an array antenna (1) comprising a number of antenna elements (3.1-3.8, 4.1-4.8). The antenna elements are divided up into a first group of at least two antenna elements (3.1, 3.3, 3.5, 3.7, 4.1, 4.3, 4.5, 4.7), having a first main lobe direction, and a second group of at least two antenna elements (3.2, 3.4, 3.6, 3.8, 4.2, 4.4, 4.6, 4.8), having a second main lobe direction. In order to produce a number of fixed antenna patterns of an attractive type, between which the array antenna can be switched, the array antenna is provided, according to the invention, with a switchable phase network (37) and a specific feed network (21, 22). The feed network is divided up, between the feedpoint (20) and the antenna elements, into a first branching network (21) for feeding the said first group of antenna elements, and a second branching network (22) for feeding the said second group of antenna elements. The first branching network is arranged to initiate essentially the same phase shift between the feedpoint and the respective antenna elements within the first group. The second branching network is arranged to initiate essentially the same phase shift between the feedpoint and the respective antenna elements within the second group. The array antenna is suitable, for example, as a base station antenna in a mobile telephone system. <IMAGE>
IPC 1-7
IPC 8 full level
H01Q 1/08 (2006.01); H01Q 3/38 (2006.01); H01Q 21/06 (2006.01)
CPC (source: EP)
H01Q 1/08 (2013.01); H01Q 3/38 (2013.01); H01Q 21/065 (2013.01)
Citation (search report)
- [A] US 4833482 A 19890523 - TRINH TRANG N [US], et al
- [A] SE 455907 B 19880815 - PHILIPS NORDEN AB [SE]
- [A] EP 0456579 A1 19911113 - THOMSON CSF [FR]
- [A] EP 0415818 A1 19910306 - THOMSON CSF [FR]
- [A] PATENT ABSTRACTS OF JAPAN vol. 11, no. 11 (E - 470)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0614246 A1 19940907; EP 0614246 B1 19991201; DE 69421836 D1 20000105; DE 69421836 T2 20000706; SE 500094 C2 19940411; SE 9300480 D0 19930215; SE 9300480 L 19940411
DOCDB simple family (application)
EP 94850021 A 19940211; DE 69421836 T 19940211; SE 9300480 A 19930215