Title:
WIRELESS COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/031419
Kind Code:
A1
Abstract:
An RFID tag (101), which is an example of a wireless communication device, transmits and receives communication signals. The RFID tag (101) is provided with a base material (1), antenna patterns (2A, 2B) formed on the base material (1), and an RFIC package (3) connected to the antenna patterns (2A, 2B). The antenna patterns (2A, 2B) are configured from a plurality of conductor patterns (2Aa to 2Ae, 2Ba to 2Be). The antenna patterns (2A,2B) as a whole resonate at a communication frequency. Each of the plurality of conductor patterns (2Aa to 2Ae, 2Ba to 2Be) has a line length that does not resonate at the frequencies of an electromagnetic-heating microwave band higher than the communication frequency. With this structure, it is possible to prevent ignition and combustion even in a situation in which the RFID tag is attached to a food item and the like and subjected to high-frequency power for heating foods.
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Inventors:
KATO NOBORU (JP)
YAZAKI HIROKAZU (JP)
YAZAKI HIROKAZU (JP)
Application Number:
PCT/JP2019/012097
Publication Date:
February 13, 2020
Filing Date:
March 22, 2019
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
G06K19/077; H01Q9/16; H01P1/30; H01Q1/38
Domestic Patent References:
| WO2015045614A1 | 2015-04-02 | |||
| WO2016043173A1 | 2016-03-24 |
Foreign References:
| JP2007164528A | 2007-06-28 | |||
| JP2010136114A | 2010-06-17 | |||
| US20100134291A1 | 2010-06-03 |
Other References:
HOFMANN: "Reliability and Statistics in Transportation and Communication", UHF RFID INDUSTRY HEAT RESISTANT TAG, PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE, October 2012 (2012-10-01), pages 326 - 331
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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