Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2009-02-20
2011-10-25
Twell, Jr., John A (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C343S871000
Reexamination Certificate
active
08044805
ABSTRACT:
A radio frequency identification (RFID) tag using a monopole antenna is provided, in which an antenna structure is disposed on a metal plate, two ends of an RFID chip are electrically connected to the antenna structure, and the antenna structure and the RFID chip form a loop structure. The RFID tag can be disposed on a surface of an object to be measured, or disposed in an inner accommodation space of the object to be measured, so it is widely used in various applications. Additionally, the RFID tag is easily manufactured, so the production cost can be reduced. Furthermore, the RFID tag has a larger readable distance, and an electromagnetic wave emitting direction of the RFID tag is adjustable according to different included angles between the metal plate and the antenna structure, thereby causing signals to be read easily and identification ability to improve, two desirable effects.
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Chen Sung-Lin
Kuo Shih-Kang
Liao Lung-Chi
Lin Chang-Tsun
China Steel Corporation
King Anthony
Twell, Jr. John A
WPAT, P.C.
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