Loop antenna for in the ear audio device

Details Loop antenna for in the ear audio device Loop antenna for in the ear audio device

2007-01-25

2008-11-11

Phan, Tho G (Department: 2821)

Communications: radio wave antennas

Antennas

Body-attached or connected

C343S702000, C343S741000

Reexamination Certificate

active

07450078

ABSTRACT:
The invention regards a communication device which is adapted for placement in a users ear and comprises a shell part enclosing an input transducer for receiving an input signal, a signal processing device and an output transducer for providing a signal perceivable as sound, a battery located at a surface part of the shell which is facing away from the head of the user, a transmission and reception circuit for transmission and/or reception of electromagnetic energy, and where an antenna for radiating and/or receiving electromagnetic energy is arranged with a first surface turned towards the surroundings and a second surface located in close proximity of the battery whereby the antenna forms a loop with a loop axis pointing away from the ear and head, whereby the loop material has a wider extension in the direction of the loop axis than in the direction perpendicular to the loop axis.

REFERENCES:
patent: 5734976 (1998-03-01), Bartschi et al.
patent: 6537200 (2003-03-01), Leysieffer et al.
patent: 6591786 (2003-07-01), Davis
patent: 2002/0030630 (2002-03-01), Maeda et al.
patent: 2003/0025478 (2003-02-01), Zinc et al.
patent: 2004/0028251 (2004-02-01), Kasztelan et al.
patent: 10 2004 021 962 (2005-06-01), None
patent: 1 389 035 (2004-02-01), None
patent: WO-2005/081583 (2005-09-01), None

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