Title:
無線ICデバイス
Document Type and Number:
Japanese Patent JP4671001
Kind Code:
B2
Abstract:
A radio IC device that can be used in a plurality of frequency bands for RFID tags and that is compact and has superior radiation characteristics is configured. A spiral line electrode portion (22) and a one-side electrode (23), extending from an inner end thereof, of a capacitor electrode portion are formed on a top surface of a sheet-like substrate (21), and an other-side electrode (24) facing the one-side electrode (23) and a crossing line electrode (25) are formed on a bottom surface of the substrate (21). A first radio IC chip (61) is mounted somewhere in the line electrode portion (22), and a second RFID tag radio IC (31) is mounted so as to be connected to a front-to-back connection portion (26) and an end of an electric-field radiation electrode portion (33). The radio IC chip (61) rectifies an RF signal in a first frequency band and outputs and supplies power to the second RFID tag radio IC (31).
Inventors:
Shinro Ikemoto
Application Number:
JP2010501323A
Publication Date:
April 13, 2011
Filing Date:
July 03, 2009
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
G06K19/07; G06K19/077; H01Q1/38; H01Q5/10; H01Q5/35; H02J50/00; H02J50/05; H02J50/12
Domestic Patent References:
| JP2007287128A | 2007-11-01 | |||
| JP2004213582A | 2004-07-29 | |||
| JP2002032731A | 2002-01-31 | |||
| JP2005135132A | 2005-05-26 | |||
| JP2003536302A | 2003-12-02 | |||
| JP2008519347A | 2008-06-05 |
Attorney, Agent or Firm:
Kaede International Patent Office