Title:
NON-CONTACT WIRELESS COMMUNICATION COIL, TRANSMISSION COIL, AND PORTABLE WIRELESS TERMINAL
Document Type and Number:
WIPO Patent Application WO/2013/065245
Kind Code:
A1
Abstract:
A coil unit is disposed by having laminated therein a first magnetic body (11), a first coil (12) for non-contact power transmission, a second magnetic body (21), a substrate (30), and a second coil (22) for non-contact wireless communication in this order in the thickness direction of the coils. The first coil (12) and the second coil (22) have at least parts thereof overlapping each other, have a region where the second coil does not overlap, said region being on the inner circumferential side of the first coil, and have portions close to the outer circumference of the first coil (12) overlapping the second coil (22). The resonance frequency of the first coil (12) is lower than that of the second coil (22), and the magnetic permeability of the first magnetic body (11) is higher than that of the second magnetic body (21).
Inventors:
HIROBE TAKANORI
UEJIMA HIROYUKI
KOYANAGI YOSHIO
UEJIMA HIROYUKI
KOYANAGI YOSHIO
Application Number:
PCT/JP2012/006644
Publication Date:
May 10, 2013
Filing Date:
October 17, 2012
Export Citation:
Assignee:
PANASONIC CORP (JP)
International Classes:
H04B5/02; H01F38/14; H01Q7/06; H02J7/00; H04M1/02
Foreign References:
| JP2011103694A | 2011-05-26 | |||
| JP2008125115A | 2008-05-29 | |||
| JP2009182902A | 2009-08-13 | |||
| JP2004110854A | 2004-04-08 |
Other References:
See also references of EP 2775632A4
Attorney, Agent or Firm:
HASHIMOTO, Kimihide et al. (JP)
Kimihide Hashimoto (JP)
Kimihide Hashimoto (JP)
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Claims: