Title:
HF BAND WIRELESS COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/058072
Kind Code:
A1
Abstract:
Provided is an HF band wireless communication device whereby the necessary communication distance is ensured, power loss is minimal, and resonant frequency is stable. This HF band wireless communication device is provided with: a wireless IC (10) for processing of wireless signals; a first substrate (20) having a first inductor pattern (21) connected to the wireless IC (10); and a second substrate (30) having a second inductor pattern (31) series-connected to the first inductor pattern (21). The first inductor pattern (21) has an L value greater than the L value of the second inductor pattern (31), the resonant frequency of the resonant circuit which includes the first and second inductor patterns (21), (31) being governed by the L value of the first inductor pattern (21). The second inductor pattern (31) has a winding diameter greater than the winding diameter of the first inductor pattern (21), and the second inductor pattern (31) functions as the main radiating element.
Inventors:
MURAYAMA HIROMI (JP)
DOKAI YUYA (JP)
DOKAI YUYA (JP)
Application Number:
PCT/JP2013/077893
Publication Date:
April 17, 2014
Filing Date:
October 15, 2013
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01Q7/00; G06K19/07; G06K19/077; H01Q1/40
Domestic Patent References:
| WO2012111430A1 | 2012-08-23 | |||
| WO2012137717A1 | 2012-10-11 |
Foreign References:
| JP2012110043A | 2012-06-07 |
Attorney, Agent or Firm:
PROFIC PC (JP)
Patent business corporation pro フィック patent firm (JP)
Patent business corporation pro フィック patent firm (JP)
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