Title:
ANTENNA
Document Type and Number:
WIPO Patent Application WO/2007/119310
Kind Code:
A1
Abstract:
A small antenna which can ensure a wide band is provided. The antenna is provided
with magnetically coupled inductance elements (L1, L2). The antenna includes
an LC serial resonance circuit composed of the inductance element (L1) and capacitance
elements (C1a, C1b), and an LC serial resonance circuit composed of the inductance
element (L2) and capacitance elements (C2a, C2b). A plurality of LC serial resonance
circuits are used for radio emission and also as an inductance of a matching circuit
for matching the impedance (50Ω) obtained by viewing a power supply side
from power supply terminals (5, 6) with radiation impedance (377Ω) in
a free space.
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Inventors:
KATO NOBORU (JP)
Application Number:
PCT/JP2007/054242
Publication Date:
October 25, 2007
Filing Date:
March 06, 2007
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
KATO NOBORU (JP)
KATO NOBORU (JP)
International Classes:
H01Q7/00; H01Q1/38; H01Q1/50; H01Q5/10
Foreign References:
| JP2002204117A | 2002-07-19 | |||
| JP2004336250A | 2004-11-25 | |||
| JP2003110344A | 2003-04-11 | |||
| JP2003037426A | 2003-02-07 |
Other References:
See also references of EP 2009738A4
Attorney, Agent or Firm:
MORISHITA, Takekazu et al. (2-18 Minamihommachi 4-chome,,Chuo-ku, Osaka-shi, Osaka54, JP)
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