MAGNETIC ANTENNA, RF TAG, AND SUBSTRATE HAVING THE RF TAG MOUNTED THEREON

Title:

MAGNETIC ANTENNA, RF TAG, AND SUBSTRATE HAVING THE RF TAG MOUNTED THEREON

Document Type and Number:

WIPO Patent Application WO/2010/087413

Kind Code:

A1

Abstract:

Provided is a RF tag wherein an IC is mounted on a magnetic antenna which transmits/receives information using an electromagnetic induction system. In the magnetic antenna, a plurality of coils wherein the inductance (L1) satisfies a specific relational expression are formed on one magnetic core, the coils are connected in parallel on an electric circuit and are arranged in series with the magnetic core, and the synthesized inductance (L0) of the magnetic antenna satisfies a specific relational expression. The RF tag is a magnetic antenna for communicating information using magnetic field components and has a small size and improved communication sensitivity at the same time.

Inventors:

KOUJIMA JUN (JP)
OHMAE SATOSHI (JP)
KIMURA TETSUYA (JP)
SATO YOSHIRO (JP)

Application Number:

PCT/JP2010/051162

Publication Date:

August 05, 2010

Filing Date:

January 28, 2010

Export Citation:

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Assignee:

TODA KOGYO CORP (JP)
KOUJIMA JUN (JP)
OHMAE SATOSHI (JP)
KIMURA TETSUYA (JP)
SATO YOSHIRO (JP)

International Classes:

H01Q7/06; G06K19/07; H04B5/02

Foreign References:

JP2009017593A	2009-01-22
JP2005033278A	2005-02-03
JP2007295360A	2007-11-08
JP2007019891A	2007-01-25
JPH0964634A	1997-03-07

Other References: