Communications: radio wave antennas – Antennas – Including magnetic material
Reexamination Certificate
2008-05-13
2008-05-13
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
Including magnetic material
C343S711000, C343S787000
Reexamination Certificate
active
07372421
ABSTRACT:
An antenna device has a core made of a magnetic material, a coil formed by winding a conducting wire on a predetermined range including the core and the outer region of the core, and a sub-core that adjusts the resonance frequency by moving in the inner peripheral region of the coil and in the direction orthogonal to the winding direction of the coil. A communication system of the present invention is a combination of an external communication device, the antenna device, and an internal communication device that is connected to the antenna device and is disposed in a cabin.
REFERENCES:
patent: 6400330 (2002-06-01), Maruyama et al.
patent: 6965352 (2005-11-01), Ohara et al.
patent: 7023395 (2006-04-01), Ohara et al.
patent: 7095381 (2006-08-01), Kimura et al.
patent: S50-102234 (1975-08-01), None
patent: H6-13213 (1994-02-01), None
patent: 09-125776 (1997-05-01), None
patent: 10-110565 (1998-04-01), None
patent: 2002-030844 (2002-01-01), None
patent: 2004/364231 (2004-12-01), None
patent: WO 02/45210 (2002-06-01), None
International Search Report corresponding to International Application No. PCT/JP2005/J003298, dated Jun. 28, 2005.
Ho Tan
Matsushita Electric - Industrial Co., Ltd.
RatnerPrestia
LandOfFree
Antenna device and communication system using it does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Antenna device and communication system using it, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna device and communication system using it will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2751406