Antenna and portable electronic device

Details Antenna and portable electronic device Antenna and portable electronic device

2007-08-09

2010-12-28

Le, HoangAnh T (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S702000

Reexamination Certificate

active

07859480

ABSTRACT:
A portable electronic device having an RFID function has an RFID antenna having a planar coil formed by winding a conductor. The RFID antenna is a loop antenna having a loop diameter corresponding to RFID with a strong electromagnetic field characteristic, and has an antenna pattern where a part of its coil turn which is other than an innermost coil turn is placed inward of the innermost coil turn. The antenna pattern can be provided by bending or branching a part of a coil turn of the conductor which is other than the innermost coil turn in such a way that the part of the coil turn is laced inward of the innermost coil turn, thereby ensuring compensation for the magnetic field strength at the center portion of the antenna and achieving excellent communications without a non-communicatable area even with the RFID having a slight electromagnetic field characteristic.

REFERENCES:
patent: 5541399 (1996-07-01), de Vall
patent: 5574470 (1996-11-01), de Vall
patent: 6161761 (2000-12-01), Ghaem et al.
patent: 7339546 (2008-03-01), Pangaud et al.
patent: 7342548 (2008-03-01), Taniguchi et al.
patent: 7439933 (2008-10-01), Uesaka
patent: 2006/0181470 (2006-08-01), Pangaud et al.
patent: 08-330840 (1996-12-01), None
patent: 2001-085926 (2001-03-01), None
patent: 2001-094322 (2001-04-01), None
patent: 2003-067692 (2003-03-01), None
patent: 2003-110338 (2003-04-01), None
patent: 2003-224415 (2003-08-01), None
patent: 2004-173293 (2004-06-01), None
patent: 2004-214709 (2004-07-01), None
patent: 2004-227046 (2004-08-01), None
patent: 2004-320571 (2004-11-01), None
patent: 2005-070855 (2005-03-01), None
patent: 2005-318102 (2005-11-01), None
patent: 2006-074348 (2006-03-01), None
patent: WO 2004/090793 (2004-10-01), None
Office Action dated Jun. 13, 2008 issued for the counterpart Korean patent application (4 pgs.).

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