Wireless IC device and component for wireless IC device
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United States of America Patent
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Apr 14, 2009
Grant Date -
Jul 19, 2007
app pub date -
Jan 18, 2007
filing date -
Jan 19, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A wireless IC device includes a wireless IC chip, a power supply circuit board upon which the wireless IC chip is mounted, and in which a power supply circuit is provided, the power supply circuit includes a resonant circuit having a predetermined resonant frequency, and a radiation pattern, which is adhered to the underside of the power supply circuit board, for radiating a transmission signal supplied from the power supply circuit, and for receiving a reception signal to supply this to the power supply circuit. The resonant circuit is an LC resonant circuit including an inductance device and capacitance devices. The power supply circuit board is a multilayer rigid board or a single-layer rigid board, and between the wireless IC chip and the radiation pattern is connected by DC connection, magnetic coupling, or capacitive coupling.
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