Title:
SENSOR TAG AND METHOD FOR MANUFACTURING SENSOR TAG
Document Type and Number:
WIPO Patent Application WO/2014/129070
Kind Code:
A1
Abstract:
A sensor tag (10) is provided with a crystal oscillator (110) and an antenna (102). Said antenna (102) is provided with a radiating conductor (121) and connecting conductors (122). The crystal oscillator (110) is mounted on land conductors (120) provided at the ends of the connecting conductors (122) facing away from the antenna (121). The antenna (102) is shaped such that, given the resonant frequency (Fxs) and equivalent inductance (Lxs) of the crystal oscillator (110) and the self-resonant frequency (Fant) and equivalent inductance (Lant) of the antenna (102), the amount of shift (ΔF) in the radiating frequency of the sensor tag (10) falls within an acceptable range.
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Inventors:
ITO YOSHIHIRO (JP)
Application Number:
PCT/JP2013/084011
Publication Date:
August 28, 2014
Filing Date:
December 19, 2013
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
G08C19/00; G01K7/32; G06K19/00; H01Q1/24; H01Q1/38; H01Q7/00
Foreign References:
| JP2012007963A | 2012-01-12 | |||
| JP2007333484A | 2007-12-27 | |||
| JP2003270051A | 2003-09-25 | |||
| JPS61181925A | 1986-08-14 |
Attorney, Agent or Firm:
Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
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