Wireless IC device
First Claim
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1. A wireless IC device comprising:
- a flexible sheet including a wireless IC chip, radiation plates, and a feeder circuit provided thereon;
whereinthe feeder circuit has a predetermined resonant frequency and a predetermined impedance;
the wireless IC chip is connected to the feeder circuit;
the feeder circuit and the radiation plates are coupled with each other such that a transmitted signal is radiated from the radiation plates and a received signal is supplied to the wireless IC chip; and
the feeder circuit has a structure such that the predetermined resonant frequency thereof substantially corresponds to a resonant frequency of at least one of the transmitted signal or the received signal.
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Abstract
A wireless IC device includes a flexible sheet provided with a wireless IC chip and radiation plates. The wireless IC chip is connected by an Au bump to a feeder circuit which is located on the sheet and which has a predetermined resonant frequency and a predetermined impedance. The feeder circuit includes electrode patterns, and the feeder circuit and the radiation plates are capacitively coupled with each other through the flexible sheet.
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9 Claims
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1. A wireless IC device comprising:
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a flexible sheet including a wireless IC chip, radiation plates, and a feeder circuit provided thereon;
whereinthe feeder circuit has a predetermined resonant frequency and a predetermined impedance; the wireless IC chip is connected to the feeder circuit; the feeder circuit and the radiation plates are coupled with each other such that a transmitted signal is radiated from the radiation plates and a received signal is supplied to the wireless IC chip; and the feeder circuit has a structure such that the predetermined resonant frequency thereof substantially corresponds to a resonant frequency of at least one of the transmitted signal or the received signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification