Radio frequency IC tag and method for manufacturing same

Details Radio frequency IC tag and method for manufacturing same Radio frequency IC tag and method for manufacturing same

2008-04-29

2008-04-29

Phan, Tho (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S895000, C340S572700, C235S492000

Reexamination Certificate

active

07365686

ABSTRACT:
A small radio frequency IC tag which can obtain sufficiently long communication distance with radio wave in the microwave band even if an antenna is made small and the radio frequency IC tag is embedded in metal material. An O-shaped antenna is formed to narrow the width of a neck part in which an IC chip is mounted and widen the width of radiating electrodes constituting radiating part of radio wave. The radiating electrodes are formed into offset structure on right and left sides of the feeding point so that areas of right and left radiating parts of the feeding point in which the IC chip is mounted are unsymmetrical. Further, a ground electrode is provided so that a dielectric body is held between the radiating electrodes and the ground electrode and the radiating electrode is connected to the ground electrode at the side of the dielectric body.

REFERENCES:
patent: 6914567 (2005-07-01), Trumbull
patent: 2005/0001785 (2005-01-01), Ferguson et al.
patent: 2005/0134460 (2005-06-01), Usami
patent: 2005/0275539 (2005-12-01), Sakama et al.
patent: 2006/0208901 (2006-09-01), Kai et al.
patent: 2003-085501 (2003-03-01), None
patent: 2003-298464 (2003-10-01), None

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