Antenna device and communications system using the same

Details Antenna device and communications system using the same Antenna device and communications system using the same

2006-08-22

2008-07-22

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

With vehicle

C343S788000

Reexamination Certificate

active

07403168

ABSTRACT:
An antenna made by winding a coil on the periphery of a rod-like core made of a magnetic material is housed inside a pillar having a relatively small width and disposed in a manner such that its axis line is nearly orthogonal to the vertical axis line of the pillar. With this arrangement, a predetermined communication range is secured as the electromagnetic waves radiated from the antenna are barely absorbed by the vehicle body and radiated to inside the cabin as well as to the outside. Accordingly, an inexpensive antenna device and a communications system using it are provided which enable communication with a portable device inside and outside a vehicle cabin using a single antenna.

REFERENCES:
patent: 6400330 (2002-06-01), Maruyama et al.
patent: 6522241 (2003-02-01), Baudard
patent: 6621178 (2003-09-01), Morillon
patent: 7271711 (2007-09-01), Daiss et al.
patent: 2001-520337 (2001-10-01), None
patent: WO 99/19585 (1999-04-01), None

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