WIRELESS IC DEVICE
First Claim
1. A wireless IC device, comprising:
- a wireless IC arranged to process a radio signal;
a feeder circuit board coupled to the wireless IC and including a feeder circuit that includes an inductance element, the feeder circuit board including a magnetic material; and
a radiation electrode disposed on at least one principal surface of the feeder circuit board so as to be electromagnetically coupled to the feeder circuit, the radiation electrode including at least two adjacent open ends.
1 Assignment
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Accused Products
Abstract
A wireless IC device has a resonant frequency that is hardly altered or affected by external influences and reliably communicates with a reader/writer. The wireless IC device includes a wireless IC chip arranged to process a radio signal, a feeder circuit board coupled to the wireless IC chip and including a feeder circuit, and a radiation electrode arranged at least one principal surface of the feeder circuit board. The feeder circuit board includes a magnetic material and has the feeder circuit disposed therein. The radiation electrode is disposed on at least one principal surface of the feeder circuit board so as to be electromagnetically coupled to the feeder circuit and includes at least two open ends. The wireless IC chip is coupled to the radiation electrode through the feeder circuit and communicates with a reader/writer using HF band frequency.
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Citations
9 Claims
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1. A wireless IC device, comprising:
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a wireless IC arranged to process a radio signal; a feeder circuit board coupled to the wireless IC and including a feeder circuit that includes an inductance element, the feeder circuit board including a magnetic material; and a radiation electrode disposed on at least one principal surface of the feeder circuit board so as to be electromagnetically coupled to the feeder circuit, the radiation electrode including at least two adjacent open ends. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification