ANTENNA DEVICE AND WIRELESS COMMUNICATION DEVICE

WIPO Patent Application WO/2013/051188

A1

A radiator (40) is provided with a loop-shaped radiating conductor (1, 2), a capacitor (C1), an inductor (L1), a feed point (P1) on the radiating conductor (1), and a dielectric block (D1) provided along the space between the feed point (P1) and the capacitor (C1) where the radiating conductor (1) approaches a grounding conductor (G1). When the radiator (40) is excited by a lower resonance frequency (f1), a current flows along a path that runs along the inside of the radiating-conductor loop, including the inductor (L1) and the capacitor (C1). When the radiator (40) is excited by a higher resonance frequency (F2), a current flows along a path that includes a segment between the feed point (P1) and the inductor (L1) along the outside of the radiating-conductor loop, including the capacitor (C1) but not the inductor (L1), and a parallel resonance circuit is formed between the inductance of the radiating conductor and a capacitance formed between the radiating conductor (1) and the grounding conductor (G1), which approach each other with the dielectric block (D1) interposed therebetween.

ASANUMA KENICHI
YAMAMOTO ATSUSHI
SAKATA TSUTOMU

PCT/JP2012/005537

April 11, 2013

August 31, 2012

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PANASONIC CORP (JP)
ASANUMA KENICHI
YAMAMOTO ATSUSHI
SAKATA TSUTOMU

H01Q5/10; H01Q1/38; H01Q7/00; H01Q7/06; H01Q9/16; H01Q9/30; H01Q9/42

WO2010137061A1

2010-12-02

JP2009111999A	2009-05-21
JP2007514357A	2007-05-31
JP2005228785A	2005-08-25
JP2009239463A	2009-10-15
JP2010041359A	2010-02-18
JP2009206847A	2009-09-10

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

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