EP 1962372 A1 20080827 - Miniature broadband antenna with inductive chassis coupling
Title (en)
Miniature broadband antenna with inductive chassis coupling
Title (de)
Kleine, Breitbandigeantenne mit Induktive Chassiskopplung
Title (fr)
Antenne a large bande miniature avec couplage inductif du châssis
Publication
Application
Priority
EP 06110107 A 20060217
Abstract (en)
The present proposes an antenna for use in portable electronic equipment for wireless communication. The antenna (100, 200, 300, 400, 500) comprises a first chassis element (1) of the portable electronic equipment, a second chassis element of the portable electronic equipment, an interconnection element (3) for galvanically interconnecting the first chassis element (1) with the second chassis element (2), and an inductive coupling element. The inductive coupling element is adapted to inductively couple to a current on the first chassis element (1), the second chassis element (2), and the interconnection element (3). A first antenna-feeding terminal (7b) is connected to ground of the first chassis element (1). The geometrical form of the first chassis element (1), the second chassis element (2), and the interconnection element (3) is designed for the electrical length of the chassis formed by the first chassis element, the second chassis element, and the interconnection element to correspond to an odd multiple of a half-wavelength resonance at a specified frequency. The inductive coupling element comprises a first conducting line (5), the first end of which is electrically connected to a second antenna-feeding terminal (7a), and the second end of which is electrically connected to an electrode of a tuning capacitor (6) having its other electrode electrically connected to ground of the second chassis element (6). The capacitance of said tuning capacitor (6) is thereby dimensioned for the input impedance between the first feeding terminal (7b) and the second feeding terminal (7a) to be of a defined and substantially real value at the specified frequency.
IPC 8 full level
H01Q 1/24 (2006.01); H01Q 1/08 (2006.01); H01Q 1/48 (2006.01); H01Q 5/00 (2006.01); H01Q 21/28 (2006.01)
CPC (source: EP)
H01Q 1/084 (2013.01); H01Q 1/243 (2013.01); H01Q 1/48 (2013.01); H01Q 21/28 (2013.01)
Citation (search report)
- [Y] EP 1422787 A1 20040526 - SONY ERICSSON MOBILE COMM JP [JP]
- [Y] EP 1258943 A1 20021120 - MITSUBISHI ELECTRIC CORP [JP]
- [A] WO 2005050780 A1 20050602 - SONY ERICSSON MOBILE COMM JP [JP], et al
- [A] WO 2005114779 A1 20051201 - MATSUSHITA ELECTRIC IND CO LTD [JP], et al
- [A] US 2004027298 A1 20040212 - IGUCHI AKIHIKO [JP], et al
- [A] WO 2005053089 A1 20050609 - SHARP KK [JP], et al
- [A] PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1962372 A1 20080827; EP 1962372 B1 20101013; AT E484859 T1 20101015; DE 602006017582 D1 20101125
DOCDB simple family (application)
EP 06110107 A 20060217; AT 06110107 T 20060217; DE 602006017582 T 20060217