The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2011
Filed:
Jul. 21, 2009
Jiun-jang Yu, Changhua County, TW;
Hsin-hsien Yeh, Taichung, TW;
Hong-ching Lin, Kaohsiung, TW;
Chiung-hsiung Chen, Hsinchu County, TW;
Jiun-Jang Yu, Changhua County, TW;
Hsin-Hsien Yeh, Taichung, TW;
Hong-Ching Lin, Kaohsiung, TW;
Chiung-Hsiung Chen, Hsinchu County, TW;
Industrial Technology Research Institute, Hsinchu, TW;
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.