Title:
COMMUNICATION TERMINAL APPARATUS AND ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/158844
Kind Code:
A1
Abstract:
Disclosed is a communication terminal apparatus, whereby communication characteristics are improved, and other electronic apparatuses can be efficiently disposed in a space. Also disclosed is an antenna device. The antenna device is provided with a coil conductor (10) and a booster conductor (20). The coil conductor (10) has loop-like conductors (11, 12) wound therein, a first opening (14) at the winding center portion, and both the end portions connected to a power supply circuit. The booster conductor (20) is configured of a coupling conductor portion (21) and a frame-like radiation conductor portion (25). The coupling conductor portion (21) has a second opening (22) that at least partially overlaps the first opening (14), and has a part of the coupling conductor cut at a slit (23), and the coupling conductor portion is coupled with the coil conductor (10) by electromagnetic field coupling. The frame-like radiation conductor portion (25) has a third opening (26), and is connected to the coupling conductor portion (21).
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Inventors:
NAKANO SHINICHI (JP)
KATO NOBORU (JP)
KATO NOBORU (JP)
Application Number:
PCT/JP2011/063631
Publication Date:
December 22, 2011
Filing Date:
June 15, 2011
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
NAKANO SHINICHI (JP)
KATO NOBORU (JP)
NAKANO SHINICHI (JP)
KATO NOBORU (JP)
International Classes:
H01Q7/00; G06K19/07; G06K19/077; H01Q1/24; H01Q1/38; H01Q7/06
Domestic Patent References:
| WO2010122685A1 | 2010-10-28 | |||
| WO2010122888A1 | 2010-10-28 | |||
| WO2010047214A1 | 2010-04-29 | |||
| WO2009142114A1 | 2009-11-26 | |||
| WO2007138770A1 | 2007-12-06 |
Foreign References:
| JP2003331250A | 2003-11-21 | |||
| JP2009182630A | 2009-08-13 | |||
| JP2001351083A | 2001-12-21 |
Attorney, Agent or Firm:
MORISHITA Takekazu et al. (JP)
Takeichi Morishita (JP)
Takeichi Morishita (JP)
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Claims: