PLANAR INVERTED F ANTENNA

WIPO Patent Application WO/2013/031517

A1

Provided is a planar inverted F antenna to which a power supply line can be readily connected. Two slits are provided from the open end side of a main conductive plate that functions as an excitation conductive plate up to locations where input impedance is Z (= 50Ω). Between these slits is used as a microstrip line (MSL) and the width (w) is determined such that the characteristic impedance for the transmission line is Z. Power can be supplied by the MSL to the locations where input impedance is Z, by providing the slits from the emission end side of the main conductive plate and using part of the main conductive plate as the MSL. For connection of the power supply line from the outside, a characteristic impedance (Z) connection line, for example the central conductor for a coaxial line, is used and connected as the power supply pin to the open end of the MSL. The connection position for the power supply pin is not a power supply point as required for position precision, because there is no need to consider position precision and connection can, therefore, be readily made. In addition, the connection end and the emission end of the power supply pin can be provided on the same side.

HANEISHI MISAO (JP)
YONEI YOSHIYUKI (JP)
SOBU MASAHIRO (JP)
MATSUI AKINORI (JP)

PCT/JP2012/070454

March 07, 2013

August 10, 2012

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SII MOBILE COMM INC (JP)
CHIKOUJI GAKUEN EDUCATIONAL FOUNDATION (JP)
HANEISHI MISAO (JP)
YONEI YOSHIYUKI (JP)
SOBU MASAHIRO (JP)
MATSUI AKINORI (JP)

H01Q13/08; H01Q5/10

WO2005020371A1

2005-03-03

JPH07240696A	1995-09-12
JP2000068736A	2000-03-03
JP2009077072A	2009-04-09
JP2002064322A	2002-02-28

See also references of EP 2750247A4

KUHARA, Kentaro et al. (JP)
Kentaro Kuhara (JP)

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