Coil antenna and portable electronic apparatus

Details Coil antenna and portable electronic apparatus Coil antenna and portable electronic apparatus

2011-07-12

2011-07-12

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Loop type

C343S702000, C343S895000

Reexamination Certificate

active

07978146

ABSTRACT:
Coil units including windings are disposed on opposite sides across a virtual center line that is substantially perpendicular to a direction of positional displacement of a portable electronic apparatus that is to be disposed close to a reader/writer. The windings are connected in series through a conductor such that winding directions of the windings are the same. A difference in the communication performance between a case where the portable electronic apparatus is brought closer to a central portion of the reader/writer and a case where the portable electronic apparatus is brought closer to a position that is deviated from the central portion of the reader/writer can be reduced. In particular, even in a case where the portable electronic apparatus is brought closer to a peripheral portion of the reader/writer, a predetermined maximum possible communication range can be ensured.

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Official Communication issued in corresponding European Patent Application No. 06811492.5, mailed on Apr. 7, 2010.
Official communication issued in counterpart European Application No. 06811492.5, mailed on Dec. 12, 2008.
Official communication issued in the International Application No. PCT/JP2006/320179, mailed on Jan. 16, 2007.
Official Communication issued in corresponding European Patent Application No. 06811492.5, mailed on Oct. 27, 2009.
Official Communication issued in corresponding Japanese Patent Application No. 2007-546375, mailed on Jan. 18, 2011.

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