ANTENNA DEVICE AND WIRELESS COMMUNICATION DEVICE

WIPO Patent Application WO/2013/061502

A1

A radiator (40) is provided with: looped radiation conductors (1, 2), a capacitor (C1), an inductor (L1), and a power feeding point (P1) provided on the radiation conductor (1). The distance between the radiation conductors (1, 2) and a grounded conductor (G1) gradually increases going away from the power feeding point (P1) along the looped radiation conductors in a portion where the radiation conductors (1, 2) of the radiator (40) and the grounded conductor (G1) are close to each other. When the radiator (40) is excited at a low-pass resonance frequency (f1), an electrical current flows through a pathway that includes the inductor (L1) and the capacitor (C1) and follows the inner periphery of the loops of the radiation conductors. When the radiator (40) is excited at a high-pass resonant frequency (f2), an electrical current flows through a pathway that includes a section where one end is the power feeding point (P1), the section including the capacitor (C1), not including the inductor(L1), and following the outer periphery of the loops of the radiation conductors.

ASANUMA KENICHI
YAMAMOTO ATSUSHI
SAKATA TSUTOMU

PCT/JP2012/005538

May 02, 2013

August 31, 2012

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PANASONIC CORP (JP)
ASANUMA KENICHI
YAMAMOTO ATSUSHI
SAKATA TSUTOMU

H01Q5/10; H01Q5/321; H01Q7/00; H01Q9/26; H01Q9/42; H01Q13/08

WO2007091578A1	2007-08-16
WO2010137061A1	2010-12-02

JP2009111999A	2009-05-21
JP2009239463A	2009-10-15
JP2010041359A	2010-02-18
JP2009206847A	2009-09-10
JPH08213820A	1996-08-20

SAMEJIMA, Mutsumi et al. (JP)
Mutsumi Sameshima (JP)

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