Wireless IC device
First Claim
1. A wireless integrated circuit device comprising:
- a wireless integrated circuit arranged to process a radio signal;
a power-supply circuit board connected to the wireless integrated circuit and including a power supply circuit including a coil pattern; and
a radiation plate arranged to radiate a transmission signal supplied from the power-supply circuit board or to receive a reception signal to supply the reception signal to the power-supply circuit board;
whereinthe coil pattern includes a plurality of annular conductors arranged in a helical pattern;
the radiation plate includes an opening provided in a portion thereof and a slit connected to the opening and, when viewed in plan from a direction of a winding axis of the coil pattern, the opening in the radiation plate overlaps with at least a portion of an inner area of the coil pattern and the coil pattern overlaps with at least a portion of the radiation plate surrounding the opening; and
the slit extends from and connects the opening of the radiation plate to an outer edge of the radiation plate.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless IC device includes a wireless IC chip arranged to process a radio signal, a power-supply circuit board that is connected to the wireless IC chip and that includes a power supply circuit including at least one coil pattern, and a radiation plate arranged to radiate a transmission signal supplied from the power-supply circuit board and/or receiving a reception signal to supply the reception signal to the power-supply circuit board. The radiation plate includes an opening provided in a portion thereof and a slit connected to the opening. When viewed in plan from the direction of the winding axis of the coil pattern, the opening in the radiation plate overlaps with an inner area of the coil pattern and the area of the inner area is approximately the same as that of opening.
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Citations
13 Claims
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1. A wireless integrated circuit device comprising:
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a wireless integrated circuit arranged to process a radio signal; a power-supply circuit board connected to the wireless integrated circuit and including a power supply circuit including a coil pattern; and a radiation plate arranged to radiate a transmission signal supplied from the power-supply circuit board or to receive a reception signal to supply the reception signal to the power-supply circuit board;
whereinthe coil pattern includes a plurality of annular conductors arranged in a helical pattern; the radiation plate includes an opening provided in a portion thereof and a slit connected to the opening and, when viewed in plan from a direction of a winding axis of the coil pattern, the opening in the radiation plate overlaps with at least a portion of an inner area of the coil pattern and the coil pattern overlaps with at least a portion of the radiation plate surrounding the opening; and the slit extends from and connects the opening of the radiation plate to an outer edge of the radiation plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification