Title:
ANTENNA AND HANDHELD TERMINAL
Document Type and Number:
WIPO Patent Application WO/2011/077877
Kind Code:
A1
Abstract:
Disclosed is an antenna that minimizes degradation of communication performance, which depends on an angle made with a reading surface of a reader/writer. Also disclosed is a handheld terminal provided with the disclosed antenna. A coil conductor in the shape of a rectangular spiral is formed on a flexible substrate (10). The flexible substrate (10) is provided with an opening in the area inside the windings of the coil conductor. A magnetic sheet (1) goes through the opening in the flexible substrate (10). An antenna coil (21) is disposed near an end of a circuit substrate (20). A first conductive section (11) and second conductive section (12) of the coil conductor are disposed at opposing locations on opposite sides of the opening. The magnetic sheet (1) is bent such that a proximity region of the second conductive section (12) approaches the circuit substrate (20).
Inventors:
KUBO HIROYUKI (JP)
ITO HIROMITSU (JP)
YOSUI KUNIAKI (JP)
ITO HIROMITSU (JP)
YOSUI KUNIAKI (JP)
Application Number:
PCT/JP2010/070767
Publication Date:
June 30, 2011
Filing Date:
November 22, 2010
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
KUBO HIROYUKI (JP)
ITO HIROMITSU (JP)
YOSUI KUNIAKI (JP)
KUBO HIROYUKI (JP)
ITO HIROMITSU (JP)
YOSUI KUNIAKI (JP)
International Classes:
H01Q1/38; G06K19/07; G06K19/077; H01Q1/24; H01Q7/06
Foreign References:
| JP3975918B2 | 2007-09-12 | |||
| JP2001209767A | 2001-08-03 | |||
| JP2008092131A | 2008-04-17 | |||
| JP2007524942A | 2007-08-30 | |||
| JPH0629215U | 1994-04-15 | |||
| JPH10242742A | 1998-09-11 |
Attorney, Agent or Firm:
Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
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