WIRELESS TAG COMPOSITE ANTENNA

PROBLEM TO BE SOLVED: To provide a wireless tag which, even when worn by a user, can surely process reception and transmit a response.SOLUTION: A half-wavelength dipole antenna D is configured by coupling a wireless tag IC chip 4 to one long side 1 of an annular conductor 3 having parallel long side...

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Bibliographic Details
Main Authors AKAGI TADANORI, IWATA KAZUHISA, KOBAYASHI KIMITO, TOYODA JUNICHI
Format Patent
LanguageEnglish
Published 27.03.2014
Subjects
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
CALCULATING
COMPUTING
COUNTING
ELECTRICITY
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Summary:PROBLEM TO BE SOLVED: To provide a wireless tag which, even when worn by a user, can surely process reception and transmit a response.SOLUTION: A half-wavelength dipole antenna D is configured by coupling a wireless tag IC chip 4 to one long side 1 of an annular conductor 3 having parallel long sides 1 and short sides 2 and connecting in series a meander conductor 5 and a plate-shaped tip capacitance loading conductor 6 symmetrically disposed on the outside of each short side 2 to each of two power feeding points P and P on the other long side 1 divided into three almost equal sections. To this antenna including the long side 1 having the power feeding points P and P is contactlessly joined to one side L1 of a rectangular loop antenna L, or this one side L1 is conductively connected to the long side 1 having the power feeding points P and P. In this way, a magnetic-field wave in an electromagnetic wave transmitted and received by this loop antenna is added to an electric-field wave in an electromagnetic wave transmitted and received by the dipole antenna, whereby a wireless tag antenna is configured to be transmittable/receivable.
Bibliography:Application Number: JP20120199261