Title:
MAGNETIC COUPLER AND READER
Document Type and Number:
WIPO Patent Application WO/2008/065994
Kind Code:
A1
Abstract:
A magnetic coupler and reader in which a high-frequency electromagnetic field
for responding and reading information is properly given to a small magnetic
coupling circuit element contained or added to a sheet or plate object having
a high property value such as money or securities so as to ensure adequate magnetic
coupling and supply adequate electric power. A read probe (magnetic coupler)
(100) has a loop antenna for generating a high-frequency electromagnetic field
resonantly responding to a tank circuit in a small magnetic coupling circuit
element. The loop antenna is composed of a dielectric substrate (101), a first
loop antenna (102A) formed on the front surface of the dielectric substrate,
a second loop antenna (102B) formed on the back surface of the dielectric substrate
and in the same position as that of the first loop antenna and having the same diameter
as that of the first loop antenna, and connection sections (through holes) (108,
110) for connecting the first and second loop antennas in series.
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Inventors:
FURUMURA YUJI (JP)
MURA NAOMI (JP)
NISHIHARA SHINJI (JP)
FUJINO KATSUHIRO (JP)
MISHIMA KATSUHIKO (JP)
KAMIHASHI SUSUMU (JP)
MURA NAOMI (JP)
NISHIHARA SHINJI (JP)
FUJINO KATSUHIRO (JP)
MISHIMA KATSUHIKO (JP)
KAMIHASHI SUSUMU (JP)
Application Number:
PCT/JP2007/072752
Publication Date:
June 05, 2008
Filing Date:
November 26, 2007
Export Citation:
Assignee:
PHILTECH INC (JP)
FURUMURA YUJI (JP)
MURA NAOMI (JP)
NISHIHARA SHINJI (JP)
FUJINO KATSUHIRO (JP)
MISHIMA KATSUHIKO (JP)
KAMIHASHI SUSUMU (JP)
FURUMURA YUJI (JP)
MURA NAOMI (JP)
NISHIHARA SHINJI (JP)
FUJINO KATSUHIRO (JP)
MISHIMA KATSUHIKO (JP)
KAMIHASHI SUSUMU (JP)
International Classes:
H01Q7/00; B42D15/10; G06K19/07; G06K19/077; G07D7/00; G07D7/02; G07D7/04; H01Q1/38; H04B5/02
Foreign References:
| JP2005020058A | 2005-01-20 | |||
| JPH07263935A | 1995-10-13 | |||
| JP2006041986A | 2006-02-09 | |||
| JPH0822514A | 1996-01-23 | |||
| JPH06350495A | 1994-12-22 | |||
| JP2002271122A | 2002-09-20 | |||
| JP2003087044A | 2003-03-20 | |||
| JPH05101249A | 1993-04-23 |
Attorney, Agent or Firm:
TAMIYA, Hiroshi (8th Fl.1-12, Akasaka 1-chome, Minato-k, Tokyo 52 ., JP)
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