Title:
ECCENTRIC MAGNETIC BODY COIL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2007/100092
Kind Code:
A1
Abstract:
An eccentric magnetic body coil system characterized in that when a coil (2) is
wound along a magnetic body (6), it is not wound in the center thereof but wound
eccentrically to one side. A magnetic field perpendicular to the metal surface
can be generated by utilizing the influence of the metal surface instead, such
a phenomenon that the sensitivity deteriorates at the central portion of a tag
or a sensor is eliminated, and a vertical magnetic field is obtained even at the
central portion, thus providing an eccentric magnetic body coil system in which
the phenomenon of sensitivity deterioration can be prevented.
Inventors:
ARIMURA KUNITAKA (JP)
Application Number:
PCT/JP2007/054036
Publication Date:
September 07, 2007
Filing Date:
March 02, 2007
Export Citation:
Assignee:
SMART CO LTD (JP)
ARIMURA KUNITAKA (JP)
ARIMURA KUNITAKA (JP)
International Classes:
H01F5/00; H01Q7/06; H04B5/02
Foreign References:
| JP2005192124A | 2005-07-14 | |||
| JP2005192044A | 2005-07-14 | |||
| JPS3615807Y1 | ||||
| JP2004348497A | 2004-12-09 | |||
| JP3113882B2 | 2000-12-04 | |||
| JPS58104004U | 1983-07-15 | |||
| JPS33525Y1 | ||||
| JPS5028258A | 1975-03-22 | |||
| JPS5344354Y2 | 1978-10-24 | |||
| JPS4835474Y1 | 1973-10-25 | |||
| JP2001156527A | 2001-06-08 | |||
| JP2000286761A | 2000-10-13 | |||
| JP2003317052A | 2003-11-07 |
Attorney, Agent or Firm:
NIWA, Hiroyuki et al. (Shimbashi 1-chome Minato-k, Tokyo 04, JP)
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