RFID MODULE AND RFID DEVICE
First Claim
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1. An RFID module comprising:
- an RFIC element including a first input/output terminal and a second input/output terminal;
a filter circuit that removes harmonic components of the RFIC element, the filter circuit including a first inductance element connected to the first input/output terminal, and a second inductance element connected to the second input/output terminal; and
a radiating element connected to the filter circuit;
whereinthe first inductance element and the second inductance element are magnetically coupled to each other.
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Abstract
An RFID module includes an RFIC element, a filter circuit, a matching circuit, and a radiating element. The filter circuit and the matching circuit define an RFID device. The filter circuit includes a first inductance element, a second inductance element, and a capacitor. The first inductance element and the second inductance element are of equal inductance, and are strongly magnetically coupled to each other so as to strengthen magnetic fluxes to each other. With this configuration, an RFID module and an RFID device that include a filter circuit to remove harmonic components of the RFIC element but are not large as a whole are constructed.
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Citations
12 Claims
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1. An RFID module comprising:
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an RFIC element including a first input/output terminal and a second input/output terminal; a filter circuit that removes harmonic components of the RFIC element, the filter circuit including a first inductance element connected to the first input/output terminal, and a second inductance element connected to the second input/output terminal; and a radiating element connected to the filter circuit;
whereinthe first inductance element and the second inductance element are magnetically coupled to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An RFID device disposed between an RFIC element and a radiating element, the RFIC element including a first input/output terminal and a second input/output terminal, the RFID device comprising:
a filter circuit that removes harmonic components of the RFIC element, the filter circuit including a first inductance element connected to the first input/output terminal, and a second inductance element connected to the second input/output terminal, wherein the first inductance element and the second inductance element are magnetically coupled to each other. - View Dependent Claims (12)
Specification