NFC architecture
First Claim
Patent Images
1. An integrated circuit comprising:
- a first antenna, a second antenna and an antenna matching circuit;
an antenna changer circuit for switching between the first antenna and the second antenna; and
an NFC companion circuit configured and arranged to be connected to the first antenna and connected to a power source, the NFC companion circuit being further configured and arranged to operate in a first mode and in a second mode by passing a signal from another circuit toward the first antenna, wherein in the respective first and second modes the NFC companion circuit is configured and arranged to pass the signal at a first power level and at a second power level that is higher than the first power level, wherein in the second mode the NFC companion circuit is configured and arranged to provide a non-continuous power boost by using the power source to increase a power of the signal being provided from the other circuit to the first antenna, wherein the NFC companion circuit is configured and arranged to enable the power boost in response to a difference in antenna impedance, and therein being automatically switchable between the first mode and the second mode and between the first and second antennas.
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Abstract
Disclosed is an integrated circuit, system or architecture suitable for NFC functionality and including an NFC companion block connectible to a power source and capable to providing a non-continuous power boost to NFC signals, inter alia, thereby facilitating use of a broader range of antennas, multiple antennas, and thereby providing greater NFC functionality and versatility Further disclosed is a detachable antenna embedded in a potentially detachable shell which closely fits a mobile device and is adapted for use with the above mentioned integrated circuit, system or architecture.
13 Citations
20 Claims
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1. An integrated circuit comprising:
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a first antenna, a second antenna and an antenna matching circuit; an antenna changer circuit for switching between the first antenna and the second antenna; and an NFC companion circuit configured and arranged to be connected to the first antenna and connected to a power source, the NFC companion circuit being further configured and arranged to operate in a first mode and in a second mode by passing a signal from another circuit toward the first antenna, wherein in the respective first and second modes the NFC companion circuit is configured and arranged to pass the signal at a first power level and at a second power level that is higher than the first power level, wherein in the second mode the NFC companion circuit is configured and arranged to provide a non-continuous power boost by using the power source to increase a power of the signal being provided from the other circuit to the first antenna, wherein the NFC companion circuit is configured and arranged to enable the power boost in response to a difference in antenna impedance, and therein being automatically switchable between the first mode and the second mode and between the first and second antennas. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A mobile device comprising:
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an NFC companion circuit; an NFC controller circuit connected to the NFC companion circuit and configured and arranged to control operation of the NFC companion circuit, and wherein the NFC controller circuit includes a transmitter configured and arranged to provide signals to the NFC companion circuit; a power source connected to the NFC companion circuit; and two antennas connected to the NFC companion circuit, wherein the NFC companion circuit is configured and arranged to operate in a first mode and in a second mode by passing the signals from the NFC controller circuit toward a first antenna of the two antenna, wherein in the respective first and second modes the NFC companion circuit is further configured and arranged to pass the signals at a first power level and at a second power level that is higher than the first power level, wherein in the second mode the NFC companion circuit is configured and arranged to provide a non-continuous power boost by using the power source to increase a power of the signals being provided from the NFC controller circuit to a second antenna of the two antennas, wherein the NFC companion circuit is configured and arranged to enable the power boost in response to a sensed difference in antenna impedance between the two antennas. - View Dependent Claims (9, 10, 11, 12)
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13. An integrated circuit comprising:
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an NFC companion circuit connectable to a first antenna, a second antenna, and connectable to a power source, the NFC companion circuit being configured and arranged to operate in a first mode and in a second mode by passing a signal from an NFC controller circuit toward the first antenna, wherein in the respective first and second modes the NFC companion circuit is configured and arranged to pass the signal at a first power level and at a second power level that is higher than the first power level, wherein in the second mode the NFC companion circuit is configured and arranged to provide a non-continuous power boost to increase a power of the signal, in response to a sensed difference in antenna impedance, being provided from the NFC companion circuit to the first antenna from the first power level to the second power level, and thereby automatically switching between the first mode and the second mode and switching between the first and second antennas; and the NFC controller circuit connected to the NFC companion circuit, wherein the NFC controller circuit is configured and arranged to control the NFC companion circuit to cause the NFC companion circuit to provide the non-continuous power boost. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification