ANTENNA AND WIRELESS IC DEVICE - MURATA MANUFACTURING CO

Title:

ANTENNA AND WIRELESS IC DEVICE

Document Type and Number:

WIPO Patent Application WO/2010/087429

Kind Code:

A1

Abstract:

Disclosed are an antenna for wireless IC devices that has good energy transmission efficiency with wireless ICs, and a wireless IC device that is equipped with said antenna. An antenna (30) comprises a coil pattern (31) and spiral coupling patterns (32a, 32b), which are formed at both ends of said coil pattern (31) and are disposed facing one another. A wireless IC device (1A) is configured by installing a coupling module (20), comprising a wireless IC chip (21) and a power supply circuit substrate (25) which has a power supply circuit that couples with said wireless IC chip (21), on the coupling pattern (32a). The coil pattern (31) is an open type that, with the adjacent coupling patterns (32a, 32b), overall forms a single LC resonator, which improves the energy transmission efficiency between the antenna (30) and wireless IC chip (21) by focusing energy to the coupling patterns (32a, 32b).

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Inventors:

KATO NOBORU (JP)
SASAKI JUN (JP)
MIURA TEPPEI (JP)
GOUCHI NAOKI (JP)

Application Number:

PCT/JP2010/051205

Publication Date:

August 05, 2010

Filing Date:

January 29, 2010

Export Citation:

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Assignee:

MURATA MANUFACTURING CO (JP)
KATO NOBORU (JP)
SASAKI JUN (JP)
MIURA TEPPEI (JP)
GOUCHI NAOKI (JP)

International Classes:

H01Q7/00; G06K19/07; G06K19/077; H01Q1/50; H01Q9/42

Domestic Patent References:

WO2008081699A1

2008-07-10

Foreign References:

JP2000510271A	2000-08-08
JP2003332820A	2003-11-21

Other References: