Multipurpose antenna unit and a hearing aid comprising a multipurpose antenna unit
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United States of America Patent
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Nov 19, 2013
Grant Date -
Feb 19, 2009
app pub date -
Aug 13, 2008
filing date -
Aug 14, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to an antenna unit for wireless communication to a multitude of wireless interfaces comprising a multitude of individual antennas, each antenna comprising a coil comprising at least one winding and the individual antennas embrace the same volume and to a hearing aid comprising such antenna unit. The object of the present invention is to provide an antenna unit and a hearing aid providing several wireless interfaces at a relatively small volume. The problem is solved in that at least one of the coils is adapted for providing an inductive coupling to another device. Among the advantages are reduced space/volume, reduced cost and reduced sensitivity to production tolerances compared to a solution comprising individual, separate antennas. The invention may e.g. be used in wireless communication devices, e.g. mobile telephones, head phones, head sets, hearing aids, etc.
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