EP 1962375 A1 20080827 - A multi-band antenna for a portable radio communication device
Title (en)
A multi-band antenna for a portable radio communication device
Title (de)
Mehrband-Antenne für ein tragbares Funkkommunikationsgerät
Title (fr)
Antenne multibande pour dispositif portable de communications radio
Publication
Application
Priority
EP 07445005 A 20070220
Abstract (en)
The present invention relates to a multi-band antenna arranged to provide a high frequency band and a low frequency band for a portable radio communication device, the multi-band antenna comprising a main antenna element (1) and a parasitic antenna element (2), wherein the main antenna element (1) is arranged to provide resonance in the high frequency band and the low frequency band, wherein the multi-band antenna comprises controllable switching means (9) arranged to tune the parasitic antenna element (2) to a first parasitic resonance center frequency (IIa) above a first main resonance center frequency (Ia) of the main antenna element (1) in a first state of the switching means (9) and to tune the parasitic antenna element (2) to a second parasitic resonance center frequency (IIb) below a second main resonance center frequency (Ib) in a second state of the switching means (9).
IPC 8 full level
H01Q 1/24 (2006.01); H01Q 5/00 (2006.01); H01Q 5/378 (2015.01); H01Q 9/04 (2006.01); H01Q 19/00 (2006.01)
CPC (source: EP)
H01Q 1/243 (2013.01); H01Q 5/378 (2015.01); H01Q 9/0421 (2013.01); H01Q 9/0442 (2013.01); H01Q 19/005 (2013.01)
Citation (search report)
- [X] EP 1469549 A1 20041020 - FILTRONIC LK OY [FI]
- [X] US 2004233109 A1 20041125 - YING ZHINONG [SE], et al
- [E] EP 1755191 A1 20070221 - NOKIA CORP [FI]
Designated contracting state (EPC)
DE FI FR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07445005 A 20070220; SE 2008000131 W 20080219