Registers – Records – Conductive
Reexamination Certificate
2009-07-21
2011-10-25
Le, Thien M. (Department: 2887)
Registers
Records
Conductive
C235S375000, C235S380000, C235S441000, C235S451000, C235S487000, C340S572100, C340S572700
Reexamination Certificate
active
08042744
ABSTRACT:
A radio frequency identification (RFID) tag including a substrate, an RFID chip, a chip contact part, a folding circuit and a radiation part is provided. The chip contact part is formed on the substrate and electrically coupled to the RFID chip. The folding circuit is formed on the substrate and electrically coupled to the chip contact part. The folding circuit has a winding part, which forms a hollow region, for compensating the antenna electric length. The radiation part is formed on the substrate and electrically coupled to the folding circuit, wherein one terminal of the winding part of the folding circuit is open, and the other terminal is electrically coupled to the radiation part. At least one of the folding circuit and the radiation part is asymmetric to the chip contact part.
REFERENCES:
patent: 6501435 (2002-12-01), King et al.
patent: 7215295 (2007-05-01), Egbert
patent: 7336243 (2008-02-01), Jo et al.
patent: 7339550 (2008-03-01), Hayama
patent: 7434739 (2008-10-01), Matsuura et al.
patent: 2002/0175873 (2002-11-01), King et al.
patent: 2006/0054710 (2006-03-01), Forster et al.
patent: 2007/0164867 (2007-07-01), Kawai
Chen Chiung-Hsiung
Lin Hong-Ching
Yeh Hsin-Hsien
Yu Jiun-Jang
Industrial Technology Research Institute
Le Thien M.
Thomas|Kayden
Vo Tuyen K
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