Registers – Records – Conductive
Reexamination Certificate
2008-12-02
2011-12-06
Franklin, Jamara (Department: 2876)
Registers
Records
Conductive
Reexamination Certificate
active
08070070
ABSTRACT:
An antenna device is arranged to transmit or receive a radio frequency communication signal to or from an external device such as a reader/writer, and is arranged such that an antenna resonance circuit including an antenna coil and a capacitor is connected to an additional resonance circuit including an inductor and a capacitor. A radio frequency IC device preferably includes the antenna device and a radio frequency IC. The antenna device is constructed such that a change in characteristics thereof caused by a change in the distance between a radio frequency IC device and a reader/writer is minimized, and the radio frequency IC device performs communication with high reliability.
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Kato Noboru
Sasaki Jun
Taniguchi Katsumi
Franklin Jamara
Keating & Bennett LLP
Murata Manufacturing Co. Ltd.
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