NFC antenna module and NFC module including the same
First Claim
Patent Images
1. A near field communication (NFC) module comprising:
- an NFC controller including an NFC transmitter, an NFC receiver and an NFC card;
a matching circuit including a transmitter interface connected to the NFC transmitter, a receiver interface connected to the NFC receiver and a card interface connected to the NFC card; and
an antenna module including a first terminal, a second terminal, an antenna connected to the first and second terminals, and a resonance unit, the antenna module configured to be directly connectable to the matching circuit via the first and second terminals and detachable from the matching circuit, and the resonance unit integrated as part of the antenna module,wherein the resonance unit is connected to the first and second terminals and includes a first passive device, a value of the first passive device being such that a resonance frequency between the first and second terminals is in a predetermined frequency range.
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Abstract
A resonance frequency of a near field communication (NFC) antenna module may be set to be equal to a first frequency by a resonance unit included in the NFC antenna module. The NFC module may include a matching circuit connected to the NFC antenna module. The matching circuit may include terminals exposed to the outside such that the antenna module is detachable from the matching circuit.
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Citations
20 Claims
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1. A near field communication (NFC) module comprising:
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an NFC controller including an NFC transmitter, an NFC receiver and an NFC card; a matching circuit including a transmitter interface connected to the NFC transmitter, a receiver interface connected to the NFC receiver and a card interface connected to the NFC card; and an antenna module including a first terminal, a second terminal, an antenna connected to the first and second terminals, and a resonance unit, the antenna module configured to be directly connectable to the matching circuit via the first and second terminals and detachable from the matching circuit, and the resonance unit integrated as part of the antenna module, wherein the resonance unit is connected to the first and second terminals and includes a first passive device, a value of the first passive device being such that a resonance frequency between the first and second terminals is in a predetermined frequency range. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A near field communication (NFC) module comprising:
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an antenna module including a first terminal, a second terminal, an antenna connected to the first and second terminals, and a resonance unit; a matching circuit including a plurality of passive devices; and an NFC controller connected to the matching circuit, wherein the antenna module is configured to resonate at a first frequency, to be directly connectable to the matching circuit, and to be detachable from the matching circuit, the NFC controller is configured to output or receive a signal of a second frequency, and the resonance unit is integrated as part of the antenna module and comprises a first passive device configured to have a value such that the first frequency is set regardless of the plurality of passive devices within the matching circuit. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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a controller; a memory; and a near field communication (NFC) module comprising an NFC controller including an NFC transmitter, an NFC receiver and an NFC card, a matching circuit including a transmitter interface connected to the NFC transmitter, a receiver interface connected to the NFC receiver and a card interface connected to the NFC card, an antenna module including a first terminal, a second terminal, an antenna connected to the first and second terminals, and a resonance unit, the antenna module is configured to be directly connectable to the matching circuit and detachable from the matching circuit, wherein the resonance unit is integrated as part of the antenna module, and a battery on which the antenna module including the resonance unit is installed, wherein the resonance unit is connected to the first and second terminals and includes at least one passive device, the matching circuit includes at least one passive device, and a value of the first passive device being such that a resonance frequency between the first and second terminals is in a predetermined frequency range. - View Dependent Claims (18, 19, 20)
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Specification