Title:
RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION TERMINAL
Document Type and Number:
WIPO Patent Application WO/2011/108341
Kind Code:
A1
Abstract:
In order to obtain a radio communication device and a radio communication terminal in which the coupling between an antenna pattern and a loop electrode included in a feed circuit board is reliable and a signal can be transmitted efficiently, a radio communication device equipped with a radio IC chip (10) that processes a radio signal, a feed circuit board (15) that is coupled to the radio IC chip (10) and includes a loop electrode (20) comprising coil patterns (21a to 21d) wound at a prescribed width, and an antenna pattern (35) that is electromagnetically coupled to the loop electrode (20) is disclosed. The feed circuit board (15) is arranged in a manner such that a first region (X), in which the coil patterns (21a to 21d) extend in a first direction, overlaps the antenna pattern (35) in plan view, and is arranged in a manner such that a second region (Y), in which the coil patterns (21a to 21d) extend in a second direction opposite the first direction, does not overlap the antenna pattern (35) in plan view. In addition, the first direction and the length direction of the antenna pattern (35) are the same or roughly the same.
Inventors:
KATO NOBORU (JP)
MURAYAMA HIROMI (JP)
MURAYAMA HIROMI (JP)
Application Number:
PCT/JP2011/052596
Publication Date:
September 09, 2011
Filing Date:
February 08, 2011
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
KATO NOBORU (JP)
MURAYAMA HIROMI (JP)
KATO NOBORU (JP)
MURAYAMA HIROMI (JP)
International Classes:
H01Q1/38; H01Q7/00; H01Q15/14; H04B5/02
Foreign References:
| JP2008226099A | 2008-09-25 | |||
| JP2008211572A | 2008-09-11 | |||
| JP2008167190A | 2008-07-17 |
Attorney, Agent or Firm:
MORISHITA Takekazu et al. (JP)
Takeichi Morishita (JP)
Takeichi Morishita (JP)
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Claims: