Radio frequency IC tag and method for manufacturing the same
First Claim
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1. A radio frequency IC tag comprising:
- an IC chip having information stored thereon for transmission; and
an antenna serving to radiate by electromagnetic transmission the information that is stored on the IC chip;
wherein;
in said antenna, a power-feeding part equipped with the IC chip has a longitudinal axis along a direction in which an electric current flows, and radiation parts are formed so that a width of said radiation parts becomes wider than that of the power-feeding part with respect to the longitudinal axis of the power-feeding part, said radiation parts extending from the power-feeding part at both sides thereof along the direction in which the electric current flows, the power feeding part being provided with an L-shaped slit for attaining an impedance matching between said IC chip and said antenna, and each of terminals of said IC chip being connected to each end of said power feeding part across said L-shaped slit.
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Abstract
A radio frequency IC tag and a manufacturing method for the same includes an IC chip on which information is stored, and an antenna for transmitting the information that is stored on the IC chip. In the antenna, a power-feeding part on which the IC chip is mounted extends along a direction in which an electric current flows. Radiation parts are formed so that the width of the radiation parts becomes wider than that of the power-feeding part with respect to the longitudinal axis of the power-feeding part. The radiation parts extend from the power-feeding part, at both sides thereof, along the direction in which the electric current flows.
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Citations
25 Claims
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1. A radio frequency IC tag comprising:
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an IC chip having information stored thereon for transmission; and an antenna serving to radiate by electromagnetic transmission the information that is stored on the IC chip; wherein; in said antenna, a power-feeding part equipped with the IC chip has a longitudinal axis along a direction in which an electric current flows, and radiation parts are formed so that a width of said radiation parts becomes wider than that of the power-feeding part with respect to the longitudinal axis of the power-feeding part, said radiation parts extending from the power-feeding part at both sides thereof along the direction in which the electric current flows, the power feeding part being provided with an L-shaped slit for attaining an impedance matching between said IC chip and said antenna, and each of terminals of said IC chip being connected to each end of said power feeding part across said L-shaped slit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A radio frequency IC tag comprising:
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an IC chip having information stored thereon for transmission; and an antenna serving to radiate by electromagnetic transmission the information that is stored on the IC chip; wherein; in said antenna, a power-feeding part equipped with the IC chip has a longitudinal axis along a direction in which an electric current flows, and radiation parts are formed so that a width of said radiation parts becomes wider than that of the power-feeding part with respect to the longitudinal axis of the power-feeding part, said radiation parts extending from the power-feeding part at both sides thereof along the direction in which the electric current flows wherein an insulation material is provided between the power-feeding part and the radiation parts, and the power-feeding part and the radiation parts are coupled each other by means of electrostatic capacitive coupling.
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24. A radio frequency IC tag comprising:
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an IC chip having information stored thereon for transmission; and an antenna serving to radiate by electromagnetic transmission the information that is stored on the IC chip, wherein; in said antenna, a power-feeding part equipped with the IC chip has a longitudinal axis along a direction in which an electric current flows, and radiation parts are formed so that a width of said radiation parts becomes wider than that of the power-feeding part with respect to the longitudinal axis of the power-feeding part, said radiation parts extending from the power-feeding part at both sides thereof along the direction in which the electric current flows, the power feeding part being provided with an L-shaped slit for attaining an impedance matching between said IC chip and said antenna, and each of terminals of said IC chip being connected to each end of said power feeding part across said L-shaped slit, and an insulation material is provided between the power-feeding part and the radiation parts, and the power-feeding part and the radiation parts are coupled each other by means of electrostatic capacitive coupling. - View Dependent Claims (25)
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Specification