Title:
RADIO COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/001837
Kind Code:
A1
Abstract:
Provided is a radio communication device having an RFID tag function which can be commonly used by an LF-band RFID system or an HF-band RFID system, and a UHF-band RFID system having a communication distance equivalent to a single body communication distance with the LF-band or the HF-band and the UHF-band by assuring a large mounting area of each antenna.
The radio communication device includes an integrated circuit (4) having a communication function in a first frequency band, a conductive object (3) connected to one of the I/O terminals of the integrated circuit (4), an integrated circuit (5) having a communication function in a second frequency band, and a second conductive object connected between the input and output terminal of the integrated circuit (5). The second conductive object is formed by a spiral conductive object (2). The other of the I/O terminals of the integrated circuit (4) is connected to a part of the spiral conductive object (2).
Inventors:
NISHIOKA YASUHIRO (JP)
FUKASAWA TORU (JP)
MIYASHITA HIROAKI (JP)
MIZUNO TOMOHIRO (JP)
SASAKI TAKURO (JP)
OKEGAWA HIROKATSU (JP)
FUKASAWA TORU (JP)
MIYASHITA HIROAKI (JP)
MIZUNO TOMOHIRO (JP)
SASAKI TAKURO (JP)
OKEGAWA HIROKATSU (JP)
Application Number:
PCT/JP2009/061775
Publication Date:
January 07, 2010
Filing Date:
June 26, 2009
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
NISHIOKA YASUHIRO (JP)
FUKASAWA TORU (JP)
MIYASHITA HIROAKI (JP)
MIZUNO TOMOHIRO (JP)
SASAKI TAKURO (JP)
OKEGAWA HIROKATSU (JP)
NISHIOKA YASUHIRO (JP)
FUKASAWA TORU (JP)
MIYASHITA HIROAKI (JP)
MIZUNO TOMOHIRO (JP)
SASAKI TAKURO (JP)
OKEGAWA HIROKATSU (JP)
International Classes:
H01Q7/00; G06K19/07; G06K19/077; H01Q5/10; H01Q5/35; H01Q5/40
Domestic Patent References:
| WO2008126451A1 | 2008-10-23 |
Foreign References:
| JP2006295729A | 2006-10-26 | |||
| JP2005190119A | 2005-07-14 | |||
| JP2005252853A | 2005-09-15 | |||
| JP2007312350A | 2007-11-29 | |||
| JP2007150642A | 2007-06-14 | |||
| JP2009071413A | 2009-04-02 | |||
| JP2004240899A | 2004-08-26 |
Other References:
K. S. LEONG; M. L. NG; P. H. COLE: "Miniaturization of dual frequency RFID antenna with high frequency ratio", IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM DIGEST, July 2007 (2007-07-01), pages 5475 - 5478
See also references of EP 2296226A4
See also references of EP 2296226A4
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
Michiharu Soga (JP)
Michiharu Soga (JP)
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